Definitive experimental evidence for two-band superconductivity in [formula presented]

S. Tsuda, Takayoshi Yokoya, Y. Takano, H. Kito, A. Matsushita, F. Yin, J. Itoh, H. Harima, S. Shin

Research output: Contribution to journalArticle

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Abstract

The superconducting-gap of [Formula presented] has been studied by high-resolution angle-resolved photoemission spectroscopy. The results show that superconducting gaps with values of 5.5 and 2.2 meV open on the [Formula presented] band and the [Formula presented] band, respectively, but both the gaps close at the bulk transition temperature, providing a definitive experimental evidence for the two-band superconductivity with strong interband pairing interaction in [Formula presented]. The experiments validate the role of [Formula presented]-dependent electron-phonon coupling as the origin of multiple-gap superconductivity as well as the high transition temperature of [Formula presented].

Original languageEnglish
JournalPhysical Review Letters
Volume91
Issue number12
DOIs
Publication statusPublished - Jan 1 2003
Externally publishedYes

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superconductivity
transition temperature
photoelectric emission
high resolution
spectroscopy
electrons
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Definitive experimental evidence for two-band superconductivity in [formula presented] . / Tsuda, S.; Yokoya, Takayoshi; Takano, Y.; Kito, H.; Matsushita, A.; Yin, F.; Itoh, J.; Harima, H.; Shin, S.

In: Physical Review Letters, Vol. 91, No. 12, 01.01.2003.

Research output: Contribution to journalArticle

Tsuda, S, Yokoya, T, Takano, Y, Kito, H, Matsushita, A, Yin, F, Itoh, J, Harima, H & Shin, S 2003, 'Definitive experimental evidence for two-band superconductivity in [formula presented] ', Physical Review Letters, vol. 91, no. 12. https://doi.org/10.1103/PhysRevLett.91.127001
Tsuda, S. ; Yokoya, Takayoshi ; Takano, Y. ; Kito, H. ; Matsushita, A. ; Yin, F. ; Itoh, J. ; Harima, H. ; Shin, S. / Definitive experimental evidence for two-band superconductivity in [formula presented] . In: Physical Review Letters. 2003 ; Vol. 91, No. 12.
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