@article{c1a29cbda7c14f07b3c39e7b1cbc155a,
title = "Correlation-induced superconductivity dynamically stabilized and enhanced by laser irradiation",
abstract = "Studies on out-of-equilibrium dynamics have paved a way to realize a new state of matter. Superconductor-like properties above room temperatures recently suggested to be in copper oxides achieved by selectively exciting vibrational phonon modes by laser have inspired studies on an alternative and general strategy to be pursued for high-temperature superconductivity. We show that the superconductivity can be enhanced by irradiating laser to correlated electron systems owing to two mechanisms: First, the effective attractive interaction of carriers is enhanced by the dynamical localization mechanism, which drives the system into strong coupling regions. Second, the irradiation allows reaching uniform and enhanced superconductivity dynamically stabilized without deteriorating into equilibrium inhomogeneities that suppress superconductivity. The dynamical superconductivity is subject to the Higgs oscillations during and after the irradiation. Our finding sheds light on a way to enhance superconductivity that is inaccessible in equilibrium in strongly correlated electron systems.",
author = "Kota Ido and Takahiro Ohgoe and Masatoshi Imada",
note = "Funding Information: Our calculations were performed by using the code based on the open-source software mVMC (37). We thank the Supercomputer Center, the Institute for Solid State Physics, the University of Tokyo for the facilities. Funding: This work was financially supported by the Japan Society for the Promotion of Science through Program for Leading Graduate Schools (MERIT), the MEXT HPCI Strategic Programs for Innovative Research (SPIRE), the Computational Materials Science Initiative (CMSI), and the Creation of New Functional Devices and High-Performance Materials to Support Next-Generation Industries (CDMSI). We thank the computational resources of the K computer provided by the RIKEN Advanced Institute for Computational Science through the HPCI System Research project (under project numbers hp130007, hp140215, hp150211, hp160201, and hp170263). This work was also supported by Grant-in-Aid For Scientific Research (nos. 22104010, 22340090, and 16H06345) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. Author contributions: K.I. performed the simulations. M.I. supervised and conducted the project. Results were analyzed and the paper was written by all the authors. Competing interests: The authors declare that they have no competing interests. Data and materials availability: All data needed to evaluate the conclusions in the paper are present in the paper and/or the Supplementary Materials. Additional data related to this paper may be requested from the authors. Submitted 10 March 2017 Publisher Copyright: Copyright {\textcopyright} 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science.",
year = "2017",
doi = "10.1126/sciadv.1700718",
language = "English",
volume = "3",
journal = "Science advances",
issn = "2375-2548",
publisher = "American Association for the Advancement of Science",
number = "8",
}