Evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy

S. Tsuda; T. Yokoya; T. Kiss; Y. Takano; K. Togano; H. Kito; H. Ihara; S. Shin

Evidence for a multiple superconducting gap in MgB₂ from high-resolution photoemission spectroscopy

S. Tsuda, T. Yokoya, T. Kiss, Y. Takano, K. Togano, H. Kito, H. Ihara, S. Shin

Research output: Contribution to journal › Article › peer-review

Abstract

Multiple superconducting gap in MgB₂ was studied using high-resolution photoemission spectroscopy. A coherent peak with a shoulder structure was observed in sharp contrast to that expected from a simple isotropic-gap opening in the superconducting spectrum measured at 5.4 K. Through temperature dependent study both the gaps were found to close at the bulk transition temperature.

Original language	English
Article number	177006
Pages (from-to)	1770061-1770064
Number of pages	4
Journal	Physical Review Letters
Volume	87
Issue number	17
Publication status	Published - Oct 22 2001
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

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title = "Evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy",

abstract = "Multiple superconducting gap in MgB2 was studied using high-resolution photoemission spectroscopy. A coherent peak with a shoulder structure was observed in sharp contrast to that expected from a simple isotropic-gap opening in the superconducting spectrum measured at 5.4 K. Through temperature dependent study both the gaps were found to close at the bulk transition temperature.",

author = "S. Tsuda and T. Yokoya and T. Kiss and Y. Takano and K. Togano and H. Kito and H. Ihara and S. Shin",

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AU - Tsuda, S.

AU - Yokoya, T.

AU - Kiss, T.

AU - Takano, Y.

AU - Togano, K.

AU - Kito, H.

AU - Ihara, H.

AU - Shin, S.

PY - 2001/10/22

Y1 - 2001/10/22

N2 - Multiple superconducting gap in MgB2 was studied using high-resolution photoemission spectroscopy. A coherent peak with a shoulder structure was observed in sharp contrast to that expected from a simple isotropic-gap opening in the superconducting spectrum measured at 5.4 K. Through temperature dependent study both the gaps were found to close at the bulk transition temperature.

AB - Multiple superconducting gap in MgB2 was studied using high-resolution photoemission spectroscopy. A coherent peak with a shoulder structure was observed in sharp contrast to that expected from a simple isotropic-gap opening in the superconducting spectrum measured at 5.4 K. Through temperature dependent study both the gaps were found to close at the bulk transition temperature.

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Evidence for a multiple superconducting gap in MgB₂ from high-resolution photoemission spectroscopy

Abstract

ASJC Scopus subject areas

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