Correlation-induced superconductivity dynamically stabilized and enhanced by laser irradiation

Kota Ido, Takahiro Ohgoe, Masatoshi Imada

Research output: Contribution to journalArticle

15 Citations (Scopus)

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.

Original languageEnglish
Article number1700718
JournalScience Advances
Volume3
Issue number8
DOIs
Publication statusPublished - 2017 Jan 1
Externally publishedYes

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superconductivity
irradiation
lasers
copper oxides
inhomogeneity
electrons
oscillations
room temperature
interactions

ASJC Scopus subject areas

  • General

Cite this

Correlation-induced superconductivity dynamically stabilized and enhanced by laser irradiation. / Ido, Kota; Ohgoe, Takahiro; Imada, Masatoshi.

In: Science Advances, Vol. 3, No. 8, 1700718, 01.01.2017.

Research output: Contribution to journalArticle

Ido, Kota ; Ohgoe, Takahiro ; Imada, Masatoshi. / Correlation-induced superconductivity dynamically stabilized and enhanced by laser irradiation. In: Science Advances. 2017 ; Vol. 3, No. 8.
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