Published December 1, 2016
| Published + Submitted
Journal Article
Open
Dynamical Cooper pairing in nonequilibrium electron-phonon systems
Abstract
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.
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.Attached Files
Published - PhysRevB.94.214504.pdf
Submitted - 1511.07874v2.pdf
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PhysRevB.94.214504.pdf
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Additional details
- Eprint ID
- 72677
- Resolver ID
- CaltechAUTHORS:20161208-153127646
- German Excellence Initiative
- European Research Council (ERC)
- 291763
- Deutsche Forschungsgemeinschaft (DFG)
- KN 1254/1-1
- Harvard-MIT Center for Ultracold Atoms
- NSF
- DMR-1308435
- NSF
- DMR-1410435
- Air Force Office of Scientific Research (AFOSR)
- Army Research Office (ARO)
- Alexander von Humboldt Foundation
- Dr. Max Rössler
- Walter Haefner Foundation
- ETH Foundation
- Simons Foundation
- Institute for Quantum Information and Matter (IQIM)
- NSF Physics Frontiers Center
- Gordon and Betty Moore Foundation
- Department of Energy (DOE)
- Created
-
2016-12-09Created from EPrint's datestamp field
- Updated
-
2021-11-11Created from EPrint's last_modified field
- Caltech groups
- Institute for Quantum Information and Matter