Publications:


2021:


"Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization".
Physical Review Letters 127 067201, 2021
Authors: Christina Psaroudaki, Christos Panagopoulos

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Magnetic Skyrmions and their Applications".
Woodhead Publishing, Elsevier, 2021
Authors: Giovanni Finocchio, Christos Panagopoulos

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Colossal topological Hall effect at the transition between isolated and lattice-phase interfacial skyrmions".
Nature Communications 12, 2758, 2021
Authors: M. Raju, A. P. Petrović, A. Yagil, K. S. Denisov, N. K. Duong, B. Göbel, E. Şaşıoğlu, O. M. Auslaender, I. Mertig, I. V. Rozhansky & C. Panagopoulos

Lab members: M. Raju, Alexander Petrovic, Duong Nghiep Khoan, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Current-Induced Spin Torques on Single GdFeCo Magnetic Layers".
Adv. Mater. 33, 2007047, 2021
Authors: David Céspedes‐Berrocal, Heloïse Damas, Sébastien Petit‐Watelot, Davide Maccariello, Ping Tang, Aldo Arriola‐Córdova, Pierre Vallobra, Yong Xu, Jean‐Loïs Bello, Elodie Martin, Sylvie Migot, Jaafar Ghanbaja, Shufeng Zhang, Michel Hehn, Stéphane Mangin, Christos Panagopoulos, Vincent Cros, Albert Fert, Juan‐Carlos Rojas‐Sánchez

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"A perpendicular field electromagnet with a 250 mm access bore".
Rev. Sci. Instrum. 92, 015102, 2021
Authors: A. P. Petrović, B. H. M. Smit, K. L. Fong, B. Satywali, X. Y. Tee, and C. Panagopoulos

Lab members: Alexander Petrovic, Bennert Smit, Kin Long Fong, Bhartendu Satywali, Xian Yang Tee, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Microwave resonances of magnetic skyrmions in thin film multilayers".
Nature Communications 12, 1909, 2021
Authors: Bhartendu Satywali, Volodymyr P. Kravchuk, Liqing Pan, M. Raju, Shikun He, Fusheng Ma, Alexander Petrović, Markus Garst & Christos Panagopoulos

Lab members: Bhartendu Satywali, M. Raju, Shikun He, Ma Fusheng, Alexander Petrovic, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Skyrmion-(Anti)Vortex Coupling in a Chiral Magnet-Superconductor Heterostructure".
Physical Review Letters 126, 117205, 2021
Authors: A. P. Petrović, M. Raju, X. Y. Tee, A. Louat, I. Maggio-Aprile, R. M. Menezes, M. J. Wyszyński, N. K. Duong, M. Reznikov, Ch. Renner, M. V. Milošević, and C. Panagopoulos

Lab members: Alexander Petrovic, M. Raju, Xian Yang Tee, Duong Nghiep Khoan, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale. Superconductivity in low dimensions.


2020:


"Magnetization reversal signatures of hybrid and pure Néel skyrmions in thin film multilayers".
APL Materials 8, 111112, 2020
Authors: Nghiep Khoan Duong, Riccardo Tomasello, M. Raju, Alexander P. Petrović, Stefano Chiappini, Giovanni Finocchio, and Christos Panagopoulos

Lab members: Duong Nghiep Khoan, M. Raju, Alexander Petrovic, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"An ultra-high-vacuum rotating sample manipulator with cryogenic cooling".
Rev. Sci. Instrum. 91, 116104, 2020
Authors: X. Y. Tee, A. Paré, A. P. Petrović, and C. Panagopoulos

Lab members: Xian Yang Tee, Antoine Paré, Alexander Petrovic, Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Physical foundations and basic properties of magnetic skyrmions".
Nature Review Physics, 2020
Authors: Alexei Bogdanov and Christos Panagopoulos

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Tailoring magnetic order via atomically stacking 3d/5d electrons to achieve high-performance spintronic devices".
Applied Physics Reviews 7, 011401, 2020
Authors: Ke Huang, Liang Wu, Maoyu Wang, Nyayabanta Swain, M. Motapothula, Yongzheng Luo, Kun Han, Mingfeng Chen, Chen Ye, Allen Jian Yang, Huan Xu, Dong-chen Qi, Alpha T. N'Diaye, Christos Panagopoulos, Daniel Primetzhofer, Lei Shen, Pinaki Sengupta, Jing Ma, Zhenxing Feng, Ce-Wen Nan, and X. Renshaw Wang

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"The emergence of magnetic skyrmions".
Physics Today 73, 3, 44, 2020
Authors: Alexei Bogdanov, Christos Panagopoulos

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.


2019:


"Angle-resolved broadband ferromagnetic resonance apparatus enabled through a spring-loaded sample mounting manipulator".
Rev. Sci. Instr. 90, 076103, 2019
Authors: Shikun He, Qing Qin, Tiejun Zhou, Christos Panagopoulos

Lab members: Shikun He, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Quadratic to linear magnetoresistance tuning in TmB4".
Phys. Rev. B 99, 045119, 2019
Authors: Sreemanta Mitra, Jeremy Goh Swee Kang, John Shin, Jin Quan Ng, Sai Swaroop Sunku, Tai Kong, Paul C. Canfield, B. Sriram Shastry, Pinaki Sengupta, and Christos Panagopoulos

Lab members: Sreemanta Mitra, Jeremy Goh Swee Kang, Sai Swaroop Sunku, Christos Panagopoulos
Projects: Control of Magnetism at the Atomic Scale.

"Stabilizing zero-field skyrmions in Ir/Fe/Co/Pt thin film multilayers by magnetic history control".
Applied Physics Letters 114, 072401 , 2019
Authors: Nghiep Khoan Duong, M. Raju, A. P. Petrović, R. Tomasello, G. Finocchio, and Christos Panagopoulos

Lab members: Duong Nghiep Khoan, M. Raju, Alexander Petrovic, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Geometrically Tailored Skyrmions at Zero Magnetic Field in Multilayered Nanostructures".
Phys. Rev. Applied 11, 024064, 2019
Authors: Pin Ho, Anthony K.C. Tan, S. Goolaup, A.L. Gonzalez Oyarce, M. Raju, L.S. Huang, Anjan Soumyanarayanan, and Christos Panagopoulos

Lab members: Anthony K. C. Tan, M. Raju, Christos Panagopoulos
Projects: Control of Magnetism at the Atomic Scale.

"The evolution of skyrmions in Ir/Fe/Co/Pt multilayers and their topological Hall signature".
Nature Communications, 2019
Authors: M. Raju , A. Yagil , A. Soumyanarayanan , A. Tan , A. Almoalem, F. Ma , O. Auslaender, and C. Panagopoulos

Lab members: M. Raju, Ma Fusheng, Christos Panagopoulos
Projects: Control of Magnetism at the Atomic Scale.


2018:


"Whirling spins with a ferroelectric".
Nature Materials, 2018, 2018
Authors: Evgeny Y. Tsymbal, Christos Panagopoulos

Lab members: Christos Panagopoulos
Projects: Control of Magnetism at the Atomic Scale.

"Degeneracy of the 1/8 plateau and antiferromagnetic phases in the Shastry-Sutherland magnet TmB4".
Physical Review Letters, 121, 167203, 2018
Authors: J. Trinh, S. Mitra, C. Panagopoulos, T. Kong, P. Canfield and A. Ramirez

Lab members: Sreemanta Mitra, Christos Panagopoulos
Projects: Control of Magnetism at the Atomic Scale.

"Dimensional crossover in the quasi-one-dimensional superconductor Tl(2)Mo(6)Se(6)".
Physical Review B 98, 054507, 2018
Authors: S. Mitra, A. P. Petrović, D. Salloum, P. Gougeon, M. Potel, Jian-Xin Zhu, C. Panagopoulos, and Elbert E. M. Chia

Lab members: Christos Panagopoulos, Alexander Petrovic
Projects: Superconductivity in low dimensions.

"Stray field signatures of Néel textured skyrmions in Ir/Fe/Co/Pt multilayer films".
Appl. Phys. Lett. 112, 192403, 2018
Authors: A. Yagil, A. Almoalem, Anjan Soumyanarayanan , Anthony K. C. Tan , M. Raju , Christos Panagopoulos, and O. M. Auslaender

Lab members: Christos Panagopoulos, M. Raju, Anthony K. C. Tan, Anjan Soumyanarayanan
Projects: Control of magnetism at the atomic scale.

"Pressure-tuned superconductivity and normal-state behavior in Ba(Fe1-xCox)2As2 near the antiferromagnetic boundary".
Phys. Rev. B 97, 144515, 2018
Authors: W. Liu, Y. F. Wu, X. J. Li, S. L. Bud'ko, P. C. Canfield, C. Panagopoulos, P. G. Li, G. Mu, T. Hu, C. C. Almasan, and H. Xiao

Lab members: Christos Panagopoulos
Projects: Superconductivity in low dimensions.


2017:


"Tunable magnetization relaxation of Fe(2)Cr(1−x)Co(x)Si half-metallic Heusler alloys by band structure engineering".
Physical Review Materials, 2017
Authors: Shikun He , Yifan Liu, Yuhong Zheng, Qing Qin, Zhenchao Wen, Qingyun Wu, Yi Yang, Yupu Wang, YuanPing Feng, Kie Leong Teo, and Christos Panagopoulos

Lab members: Shikun He, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Surface region enhanced superconductivity in high-Tc cuprates".
Phys. Rev. B 95, 054516, 2017
Authors: Xian Yang Tee, T. Ito, T. Ushiyama, Y. Tomioka, I. Martin, and Christos Panagopoulos

Lab members: Xian Yang Tee, Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Magnetization dynamics in thin CoFeB films".
Proc Natl Acad Sci, 613864114, 2017
Authors: Atsushi Okada, Shikun He, Bo Gu, Shun Kanai, Anjan Soumyanarayanan, Sze Ter Lim, Michael Tran, Michiyasu Mori, Sadamichi Maekawa, Fumihiro Matsukura, Hideo Ohno, and Christos Panagopoulos

Lab members: Shikun He, Anjan Soumyanarayanan, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Insulator to metal transition in WO3 induced by electrolyte gating".
npj Quantum Materials , 2017
Authors: X. Leng, J. Pereiro, J. Strle, G. Dubuis, A. T. Bollinger, A. Gozar, J. Wu, N. Litombe, Christos Panagopoulos , D. Pavuna and I. Božović

Lab members: Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Tunable room-temperature magnetic skyrmions in Ir/Fe/Co/Pt multilayers".
Nature Materials, 2017
Authors: Anjan Soumyanarayanan , M. Raju , A. L. Gonzalez Oyarce, " Anthony K. C. Tan> , Mi-Young Im, A. P. Petrović , Pin Ho, K. H. Khoo, M. Tran, C. K. Gan, F. Ernult & Christos Panagopoulos

Lab members: Anjan Soumyanarayanan, M. Raju, Alexander Petrovic, Anthony K. C. Tan, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"4-spin plaquette singlet state in the Shastry–Sutherland compound SrCu2(BO3)2".
Nature Physics , 2017
Authors: M. E. Zayed, Ch. Rüegg, J. Larrea J., A. M. Läuchli, Christos Panagopoulos , S. S. Saxena, M. Ellerby, D. F. McMorrow, Th. Strässle, S. Klotz, G. Hamel, R. A. Sadykov, V. Pomjakushin, M. Boehm, M. Jiménez–Ruiz, A. Schneidewind, E. Pomjakushina, M. Stingaciu, K. Conder & H. M. Rønnow

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.


2016:


"A broadband ferromagnetic resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K".
Rev. Sci. Instruments 87, 043110 (2016), 2016
Authors: Shikun He and Christos Panagopoulos

Lab members: Christos Panagopoulos, Shikun He
Projects: Control of magnetism at the atomic scale.

"Reentrant Phase Coherence in Superconducting Nanowire Composites".
ACS Nano 10 (1), pp 515–523, 2016
Authors: Diane Ansermet, Alexander P. Petrović, Shikun He, Dmitri Chernyshov, Moritz Hoesch, Diala Salloum, Patrick Gougeon, Michel Potel, Lilia Boeri, Ole Krogh Andersen, and Christos Panagopoulos

Lab members: Christos Panagopoulos, Alexander Petrovic, Shikun He, Diane Ansermet
Projects: Superconductivity in low dimensions.

"Multiple broken symmetries in striped La2−xBaxCuO4 detected by the field-symmetric Nernst effect".
Phys. Rev. B 93, 054512, 2016
Authors: Anjan Soumyanarayanan, X. Y. Tee, T. Ito, T. Ushiyama, Y. Tomioka, and C. Panagopoulos

Lab members: Xian Yang Tee, Christos Panagopoulos, Anjan Soumyanarayanan
Projects: Superconductivity in low dimensions.

"Magnetic field and in-situ stress dependence of elastic behavior in EuTiO3 from resonant ultrasound spectroscopy".
Phys. Rev. B 93, 054108, 2016
Authors: Jason Schiemer, Leszek J. Spalek, Siddharth S. Saxena, Christos Panagopoulos, Takuro Katsufuji, Annette Bussmann-Holder, Jürgen Köhler, and Michael A. Carpenter

Lab members: Christos Panagopoulos
Projects: Control of intrinsic disorder in magnetoelectric materials.

"Interfacial effects revealed by ultrafast relaxation dynamics in BiFeO3/YBa2Cu3O7 bilayers".
Phys. Rev. B 93, 064510, 2016
Authors: D. Springer, Saritha K. Nair, Mi He, C. L. Lu, S. A. Cheong, T. Wu, C. Panagopoulos, Elbert E. M. Chia, and Jian-Xin Zhu

Lab members: Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Hysteretic magnetoresistance and unconventional anomalous Hall effect in the frustrated magnet TmB4".
Phys. Rev. B 93, 174408, 2016
Authors: Sai Swaroop Sunku, Tai Kong, Toshimitsu Ito, Paul C. Canfield, B. Sriram Shastry, Pinaki Sengupta, and Christos Panagopoulos

Lab members: Sai Swaroop Sunku, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"A versatile rotary-stage high frequency probe station for studying magnetic films and devices".
Rev. Sci. Instruments, 87, 074704, 2016
Authors: Shikun He, Zhaoliang Meng, Lisen Huang, Lee Koon Yap, Tiejun Zhou and Christos Panagopoulos

Lab members: Christos Panagopoulos, Shikun He
Projects: Control of magnetism at the atomic scale.

"A disorder-enhanced quasi-one-dimensional superconductor".
Nature Communications 7, Article number: 12262, 2016
Authors: A.P. Petrovic´, D. Ansermet, D. Chernyshov, M. Hoesch, D. Salloum, P. Gougeon, M. Potel, L. Boeri & C. Panagopoulos

Lab members: Christos Panagopoulos, Alexander Petrovic, Diane Ansermet
Projects: Superconductivity in low dimensions.

"Current induced domain wall motion in antiferromagnetically coupled (Co70Fe30/Pd) multilayer nanowires".
Applied Physics Letters 109, 142403 (2016), 2016
Authors: Zhaoliang Meng, Shikun He, Lisen Huang, Jinjun Qiu, Tiejun Zhou, Christos Panagopoulos, Guchang Han and Kie-Leong Teo

Lab members: Christos Panagopoulos, Shikun He
Projects: Control of magnetism at the atomic scale.

"Two types of superconducting domes in unconventional superconductors".
New J. Phys. 18, 103033, 2016
Authors: Tanmoy Das and Christos Panagopoulos

Lab members: Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Emergent phenomena induced by spin–orbit coupling at surfaces and interfaces".
Nature 539, 509–517 , 2016
Authors: Anjan Soumyanarayanan, Nicolas Reyren, Albert Fert & Christos Panagopoulos

Lab members: Anjan Soumyanarayanan, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.


2015:


"Geometric tuning of charge and spin correlations in manganite superlattices".
Appl. Phys. Lett. 106, 023120 (2015), 2015
Authors: K. Rogdakis, Z. Viskadourakis, A. Petrovic, E. Choi, J. Lee and C. Panagopoulos

Lab members: Christos Panagopoulos, Alexander Petrovic
Projects: Engineering ferroelectrics and magnetoelectrics in low dimensional interfaces.

"Ferroelectricity in underdoped La-based cuprates".
Sci. Rep. 5, 15268 (2015), 2015
Authors: Z. Viskadourakis, S. Mukherjee, B. Andersen, T. Ito, T. Sasagawa and C. Panagopolous

Lab members: Sai Swaroop Sunku, Christos Panagopoulos
Projects: Ferroelectricity in lightly doped cuprates.

"Origin of modulated phases and magnetic hysteresis in TmB4".
Phys. Rev. B, 214433, 2015
Authors: K. Wierschem, S. Sunku, T. Kong, T. Ito, P. Canfield, C. Panagopoulos and P. Sengupta

Lab members: Sai Swaroop Sunku, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.


2014:


"Emergent properties in plane view: Strong correlations at oxide interfaces".
Rev. Mod. Phys. 86, 1189, 2014
Authors: Jak Chakhalian, John W. Freeland, Andrew J. Millis, Christos Panagopoulos and James M. Rondinelli

Lab members: Christos Panagopoulos, Jak Chakhalian
Projects: Control of magnetism at the atomic scale.

"Emergent vortices at a ferromagnetic superconducting oxide interface".
New Journal of Physics 16 103012, 2014
Authors: A. P. Petrović, A. Paré, T. R. Paudel, K. Lee, S. Holmes, C. H. W. Barnes, A. David, T. Wu, E. Y. Tsymbal and C. Panagopoulos

Lab members: Christos Panagopoulos, Alexander Petrovic, Antoine Paré, Kiyoung Lee
Projects: Superconductivity in low dimensions.

"Elastic and anelastic relaxations associated with phase transitions in EuTiO3".
Phys Rev B. 90, 054119, 2014
Authors: Leszek J. Spalek, Siddharth S. Saxena, Christos Panagopoulos, Takuro Katsufuji, Jason A. Schiemer, and Michael A. Carpenter

Lab members: Christos Panagopoulos
Projects: Control of intrinsic disorder in magnetoelectric materials.

"Induced Ferromagnetism at BiFeO3/YBa2Cu3O7 Interfaces".
Sci. Rep. 4, 5368, 2014
Authors: Jian-Xin Zhu, Xiao-Dong Wen, J. T. Haraldsen, Mi He, C. Panagopoulos & Elbert E. M. Chia

Lab members: Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface".
Sci. Rep. 4, 5338, 2014
Authors: A. P. Petrović, A. Paré, T. R. Paudel, K. Lee, S. Holmes, C. H. W. Barnes, A. David, T. Wu, E. Y. Tsymbal & C. Panagopoulos

Lab members: Christos Panagopoulos, Alexander Petrovic, Antoine Paré
Projects: Superconductivity in low dimensions.

"Interface-induced magnetic coupling in multiferroic/ferromagnetic bilayer: An ultrafast pump-probe study".
Appl. Phys. Lett., 104, 141602, 2014
Authors: C. La-o-vorakiat, Y. Tian, T. Wu, C. Panagopoulos, J.-X. Zhu, H. Su, and E. M. Chia

Lab members: Christos Panagopoulos
Projects: Engineering ferroelectrics and magnetoelectrics in low dimensional interfaces.


2013:


"Bi-Quadratic Magnetoelectric Coupling in Underdoped La2CuO4+x".
Journal of Superconductivity and Novel Magnetism (Publised Online), 2013
Authors: S. Mukherjee, B. M. Andersen, Z. Viskadourakis, I. Radulov, C. Panagopoulos

Lab members: Christos Panagopoulos

"Emergence of superconductivity from the dynamically heterogeneous insulating state in La2−xSrxCuO4".
Nature Materials (Advance Online Publication) Printed version: Nature Materials 12, 47, 2013
Authors: Xiaoyan Shi, G. Logvenov, A. T. Bollinger, I. Božović, C. Panagopoulos & Dragana Popović

Lab members: Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Electric field modulation of the tetragonal domain orientation revealed in the magnetic ground state of quantum paraelectric EuTiO3".
Phys. Rev. B 87, 064103, 2013
Authors: A. P. Petrović, Y. Kato, S. S. Sunku, T. Ito, P. Sengupta, L. Spalek, M. Shimuta, T. Katsufuji, C. D. Batista, S. S. Saxena, and C. Panagopoulos

Lab members: Sai Swaroop Sunku, Christos Panagopoulos, Alexander Petrovic
Projects: Control of intrinsic disorder in magnetoelectric materials.

"Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders".
Phys. Rev. B 87, 054428, 2013
Authors: J. F. Ding, O. I. Lebedev, S. Turner, Y. F. Tian, W. J. Hu, J. W. Seo, C. Panagopoulos, W. Prellier, G. Van Tendeloo, and T. Wu

Lab members: Jiwon Seo, Christos Panagopoulos
Projects: Engineering ferroelectrics and magnetoelectrics in low dimensional interfaces.

"Enhanced and continuous electrostatic carrier doping on the SrTiO3 surface".
Sci. Rep. 3, 1721, 2013
Authors: A. B. Eyvazov, I. H. Inoue, P. Stoliar, M. J. Rozenberg & C. Panagopoulos

Lab members: Christos Panagopoulos, Azar Eyvazov

"Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ".
New Journal of Physics, 15, 103027, 2013
Authors: E. Chia, D. Springer, S. Nair, X. Zou, S. Cheong, C. Panagopoulos, T. Tamegai, H. Eisaki, S. Ishida, S. Uchida, A. Taylor and J. Zhu

Lab members: Christos Panagopoulos


2012:


"Effect of annealing on the temperature-dependent dielectric properties of LaAlO3 at terahertz frequencies".
AIP Advances 2, 012120, 2012
Authors: Xingquan Zou, Mi He, Daniel Springer, Dongwook Lee, Saritha K. Nair, Siew Ann Cheong, Tom Wu, C. Panagopoulos, D. Talbayev, and Elbert E. M. Chia

Lab members: Christos Panagopoulos

"Evidence for filamentary superconductivity nucleated at antiphase domain walls in antiferromagnetic CaFe2As2".
Physical Review B 85, 024530, 2012
Authors: H. Xiao, T. Hu, A. P. Dioguardi, N. apRoberts-Warren, A. C. Shockley, J. Crocker, D. M. Nisson, Z. Viskadourakis, Xianyang Tee, I. Radulov, C. C. Almasan, N. J. Curro, and C. Panagopoulos

Lab members: Christos Panagopoulos, Xian Yang Tee
Projects: Filamentary superconductivity in antiferromagnetic iron arsenides.

"History dependent magnetoresistance in lightly doped La2−xSrxCuO4 thin films".
Physica B: Condensed Matter 407, 1915, 2012
Authors: Xiaoyan Shi, Dragana Popović, C. Panagopoulos, G. Logvenov, A.T. Bollinger, I. Božović

Lab members: Christos Panagopoulos

"Theory of the magnetoeletric effect in a lightly doped high-Tc cuprate".
Physical Review B 85, 140405 (R), 2012
Authors: S. Mukherjee, B. M. Andersen, Z. Viskadourakis, I. Radulov, and C. Panagopoulos

Lab members: Christos Panagopoulos
Projects: Ferroelectricity in lightly doped cuprates.

"Memory Effects in the Charge Response of Lightly Doped La2-xSrxCuO4".
J Supercond Nov Magn., DOI 10.1007/s10948-012-1542-0, 2012
Authors: I.Raičević, D. Popović, C. Panagopoulos and T. Sasagawa.

Lab members: Christos Panagopoulos

"Holographic quantum criticality and strange metal transport".
New Journal of Physics, 14, 043045, 2012
Authors: Bom Soo Kim, Elias Kiritsis and Christos Panagopoulos

Lab members: Christos Panagopoulos
Projects: Holographic quantum criticality and strange metal transport.

"Transport and thermodynamic properties of quasi-two-dimensional purple bronzes A0.9Mo6O17 (A=Na, K)".
Phys. Rev. B 85, 195101, 2012
Authors: Xiaofeng Xu, A. F. Bangura, C. Q. Niu, M. Greenblatt, Song Yue, C. Panagopoulos, and N. E. Hussey

Lab members: Christos Panagopoulos

"Role of intrinsic disorder in the structural phase transition of magnetoelectric EuTiO3".
Phys. Rev. B 85, 184107, 2012
Authors: Mattia Allieta, Marco Scavini, Leszek J. Spalek, Valerio Scagnoli, Helen C. Walker, Christos Panagopoulos, Siddharth S. Saxena, Takuro Katsufuji, and Claudio Mazzoli

Lab members: Christos Panagopoulos
Projects: Control of intrinsic disorder in magnetoelectric materials.

"Low-temperature ferroelectric phase and magnetoelectric coupling in underdoped La2CuO4+x".
Phys. Rev. B 85, 214502, 2012
Authors: Z. Viskadourakis, I. Radulov, A. P. Petrović, S. Mukherjee, B. M. Andersen, G. Jelbert, N. S. Headings, S. M. Hayden, K. Kiefer, S. Landsgesell, D. N. Argyriou, and C. Panagopoulos

Lab members: Glenton Jelbert, Alexander Petrovic, Christos Panagopoulos
Projects: Ferroelectricity in lightly doped cuprates.

"Penetration depth study of LaOs4Sb12 : Multiband s-wave superconductivity".
Physical Review B 86, 064518 (2012), 2012
Authors: X. Y. Tee, H. G. Luo, T. Xiang, D. Vandervelde, M. B. Salamon, H. Sugawara, H. Sato, C. Panagopoulos, and Elbert E. M. Chia

Lab members: Christos Panagopoulos, Xian Yang Tee

"Filamentary superconductivity across the phase diagram of Ba(Fe,Co)2As2".
Phys. Rev. B 86, 064521, 2012
Authors: H. Xiao, T. Hu, S. K. He, B. Shen, W. J. Zhang, B. Xu, K. F. He, J. Han, Y. P. Singh, H. H. Wen, X. G. Qiu, C. Panagopoulos and C. C. Almasan

Lab members: Shikun He, Christos Panagopoulos

"Insights from the study of high-temperature interface superconductivity".
Phil.Trans.R.Soc. A, 370, 4890–4903, 2012
Authors: Juan Pereiro, A. T. Bollinger, G. Logvenov, A. Gozar, C. Panagopoulos, and I. Bozovic

Lab members: Juan Pereiro, Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Tunable ferroelectricity in artificial tri-layer superlattices comprised of non-ferroic components".
Nature Communications 3, Article number: 1064, 2012
Authors: K. Rogdakis, J.W. Seo, Z. Viskadourakis, Y. Wang, L.F.N. Ah Qune, E. Choi, J.D. Burton, E.Y. Tsymbal, J. Lee, and C. Panagopoulos

Lab members: Jiwon Seo, Lloyd F.N. Ah Qune, Christos Panagopoulos
Projects: Engineering ferroelectrics and magnetoelectrics in low dimensional interfaces.

"Factors affecting the shape of MBE-grown laterally aligned Fe nanowires".
Nanotechnology, 23, 485605, 2012
Authors: Shu K Lok, Jia C Tian, Yuxing Wang, Ying H Lai, Rolf Lortz, Alexander Petrovic, Christos Panagopoulos, George K L Wong, Gan Wang and Iam K Sou

Lab members: Alexander Petrovic, Christos Panagopoulos

"Low-energy electron microscope study of tobacco mosaic viruses".
J. Nanosci. Lett. 2: 29, 2012
Authors: Juan Pereiroa, Jerzy T. Sadowski, Beth Lin, Christos Panagopoulos, Ivan Božovic

Lab members: Juan Pereiro, Christos Panagopoulos


2011:


"Metallic characteristics in superlattices composed of insulators, NdMnO3/SrMnO3/LaMnO3".
Applied Physics Letters 98, 171910, 2011
Authors: J. W. Seo, B. T. Phan, J. Lee, H.-D. Kim,and C. Panagopoulos

Lab members: Jiwon Seo, Christos Panagopoulos

"Phase-fluctuating superconductivity in overdoped La2−xSrxCuO4".
Nature Physics 7, 455, 2011
Authors: Patrick M. C. Rourke, Ioanna Mouzopoulou, Xiaofeng Xu, Christos Panagopoulos, Yue Wang, Baptiste Vignolle, Cyril Proust, Evgenia V. Kurganova, Uli Zeitler, Yoichi Tanabe, Tadashi Adachi, Yoji Koike and Nigel E. Hussey

Lab members: Christos Panagopoulos

"Interface superconductivity: History, development and prospects".
Physics Express 1, 208, 2011
Authors: Juan Pereiro, Alexander Petrovic, Christos Panagopoulos, Ivan Bozžović

Lab members: Juan Pereiro, Alexander Petrovic, Christos Panagopoulos
Projects: Superconductivity in low dimensions.

"Non-Gaussian noise in the in-plane transport of lightly doped La2−xSrxCuO4:Evidence for a collective state of charge clusters".
Physical Review B 83, 195133, 2011
Authors: I. Raičević, Dragana Popović, C. Panagopoulos and T. Sasagawa

Lab members: Christos Panagopoulos

"Ferromagnetic interaction between Cu ions in the bulk region of Cu-doped ZnO nanowires".
Physical Review B 84, 153203, 2011
Authors: T. Kataoka, Y. Yamazaki, V. R. Singh, and A. Fujimori, F.-H. Chang, H.-J. Lin, D. J. Huang, C. T. Chen, G. Z. Xing, J. W. Seo, C. Panagopoulos and T. Wu

Lab members: Jiwon Seo, Christos Panagopoulos

"Evidence for quantum skyrmions in a doped antiferromagnet".
Physical Review Letters 106, 227206, 2011
Authors: I. Raičević, Dragana Popović, C. Panagopoulos, L. Benfatto, M. B. Silva Neto, E. S. Choi, and T. Sasagawa

Lab members: Christos Panagopoulos
Projects: Skyrmions in a doped antiferromagnet.

"Strain-induced interface reconstruction in epitaxial heterostructures".
Physical Review B 84, 245428, 2011
Authors: N. Lazarides, V. Paltoglou, P. Maniadis, G. P. Tsironis, and C. Panagopoulos

Lab members: Christos Panagopoulos
Projects: Strain-induced interface reconstruction in epitaxial heterostructures.

"Superconducting transitions of intrinsic arrays of weakly coupled one-dimensional superconducting chains: the case of the extreme quasi-1D superconductor Tl2Mo6Se6".
New Journal of Physics 13, 103018, 2011
Authors: B Bergk, A P Petrovic, Z Wang, Y Wang, D Salloum, P Gougeon, M Potel and R Lortz

Lab members: Alexander Petrovic


2010:


"Tunable Magnetic Interaction at the Atomic Scale in Oxide Heterostructures".
Physical Review Letters 105, 167206, 2010
Authors: J. W. Seo, W. Prellier, P. Padhan, P. Boullay, J.-Y. Kim, Hangil Lee, C. D. Batista, I. Martin, Elbert E. M. Chia, T. Wu, B.-G. Cho, and C. Panagopoulos

Lab members: Jiwon Seo, Christos Panagopoulos
Projects: Control of magnetism at the atomic scale.

"Ultrafast Pump-Probe Study of Phase Separation and Competing Orders in the Underdoped (Ba, K)Fe2As2 Superconductor".
Physical Review Letters 104, 027003, 2010
Authors: Elbert E. M. Chia, D. Talbayev, Jian-Xin Zhu, H. Q. Yuan, T. Park, J. D. Thompson, C. Panagopoulos, G. F. Chen, J. L. Luo, N. L. Wang, and A. J. Taylor

Lab members: Christos Panagopoulos

"Quasiparticle dynamics in overdoped Bi1.4Pb0.7Sr1.9CaCu2O8+δ: Coexistence of superconducting gap and pseudogap below Tc".
Physical Review B 82, 212503, 2010
Authors: Saritha K. Nair, Xingquan Zou, Elbert E. M. Chia, Jian-Xin Zhu, C. Panagopoulos, S. Ishida and S. Uchida

Lab members: Christos Panagopoulos

"Relaxor characteristics at the interfaces of NdMnO3/SrMnO3/LaMnO3 superlattices".
Physical Review B 82, 140405 (R), 2010
Authors: Jiwon Seo, Bach T. Phan, Jochen Stahn, Jaichan Lee, and Christos Panagopoulos

Lab members: Jiwon Seo, Christos Panagopoulos

"Large positive magnetoresistance of the lightly doped La2CuO4 Mott insulator".
Physical Review B 81, 235104, 2010
Authors: I. Raičević, Dragana Popović, C. Panagopoulos, and T. Sasagawa

Lab members: Christos Panagopoulos

"Nernst effect and diamagnetic response in a stripe model of superconducting cuprates".
Europhysics Letters 91, 67001, 2010
Authors: Ivar Martin and C. Panagopoulos

Lab members: Christos Panagopoulos

"Superconducting gap induced barrier enhancement in a BiFeO3-based heterostructure".
Applied Physics Letters 97, 252905, 2010
Authors: C. L. Lu, Y. Wang, L. You, X. Zhou, H. Y. Peng, G. Z. Xing, E. E. M. Chia, C. Panagopoulos, L. Chen, J.-M. Liu, J. Wang, and T. Wu

Lab members: Christos Panagopoulos


2009:


"Effect of hole doping on the London penetration depth in Bi2.15Sr1.85CaCu2O8+δ and Bi2.1Sr1.9Ca0.85Y0.15Cu2O8+δ".
Physical Review B 80, 024516, 2009
Authors: W. Anukool, S. Barakat, C. Panagopoulos, and J. R. Cooper

Lab members: Christos Panagopoulos

"Transparent and flexible polymerized graphite oxide thin film with frequency-dependent dielectric constant".
Applied Physics Letters 95, 172901, 2009
Authors: D. W. Lee, J. W. Seo, G. R. Jelbert, L. de Los Santos V., J. M. Cole, C. Panagopoulos, and C. H. W. Barnes

Lab members: Glenton Jelbert, Jiwon Seo, Christos Panagopoulos


2008:


"Evidence for Charge Glasslike Behavior in Lightly Doped La2-xSrxCuO4 at low temperatures".
Physical Review Letters 101, 177004, 2008
Authors: I. Raicevic, J. Jaroszynski, Dragana Popovic, C. Panagopoulos, and T. Sasagawa

Lab members: Christos Panagopoulos