Correlation-induced superconductivity dynamically stabilized and enhanced by laser irradiation

Kota Ido, Takahiro Ohgoe, Masatoshi Imada*

*この研究の対応する著者

研究成果査読

24 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号1700718
ジャーナルScience Advances
3
8
DOI
出版ステータスPublished - 2017
外部発表はい

ASJC Scopus subject areas

  • 一般

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