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Dynamical Cooper pairing in nonequilibrium electron-phonon systems

Knap, Michael and Babadi, Mehrtash and Refael, Gil and Martin, Ivar and Demler, Eugene (2016) Dynamical Cooper pairing in nonequilibrium electron-phonon systems. Physical Review B, 94 (21). Art. No. 214504. ISSN 2469-9950. doi:10.1103/PhysRevB.94.214504.

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We analyze Cooper pairing instabilities in strongly driven electron-phonon systems. The light-induced nonequilibrium state of phonons results in a simultaneous increase of the superconducting coupling constant and the electron scattering. We demonstrate that the competition between these effects leads to an enhanced superconducting transition temperature in a broad range of parameters. Our results may explain the observed transient enhancement of superconductivity in several classes of materials upon irradiation with high intensity pulses of terahertz light, and may pave new ways for engineering high-temperature light-induced superconducting states.

Item Type:Article
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Martin, Ivar0000-0002-2010-6449
Additional Information:© 2016 American Physical Society. Received 20 July 2016; revised manuscript received 10 October 2016; published 8 December 2016. We thank E. Berg, A. Cavalleri, I. Cirac, U. Eckern, D. Fausti, A. Georges, S. Gopalakrishnan, B. I. Halperin, A. Imamoglu, S. Kaiser, C. Kollath, M. Norman, and T. Shi for useful discussions. We acknowledge support from the Technical University of Munich—Institute for Advanced Study, funded by the German Excellence Initiative and the European Union FP7 under Grant No. 291763, Deutsche Forschungsgemeinschaft Grant No. KN 1254/1-1, Harvard-MIT CUA, NSF Grants No. DMR-1308435 and No. DMR-1410435, AFOSR Quantum Simulation MURI, the ARO-MURI on Atomtronics, Humboldt foundation, Dr. Max Rössler, the Walter Haefner Foundation, the ETH Foundation, the Simons foundation, as well as the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation. This work was supported by the US Department of Energy, Office of Science, Materials Sciences and Engineering Division.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
German Excellence InitiativeUNSPECIFIED
European Research Council (ERC)291763
Deutsche Forschungsgemeinschaft (DFG)KN 1254/1-1
Harvard-MIT Center for Ultracold AtomsUNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Walter Haefner FoundationUNSPECIFIED
Simons FoundationUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Issue or Number:21
Record Number:CaltechAUTHORS:20161208-153127646
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Official Citation:Dynamical Cooper pairing in nonequilibrium electron-phonon systems Michael Knap, Mehrtash Babadi, Gil Refael, Ivar Martin, and Eugene Demler Phys. Rev. B 94, 214504 (2016)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72677
Deposited By: Tony Diaz
Deposited On:09 Dec 2016 04:27
Last Modified:11 Nov 2021 05:05

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