Fermi-Liquid Behavior and BCS s-Wave Pairing of K3C60 Observed by 13C-NMR

Susumu Sasaki; Azusa Matsuda; C. W. Chu

doi:10.1143/JPSJ.63.1670

Fermi-Liquid Behavior and BCS s-Wave Pairing of K₃C₆₀ Observed by ¹³C-NMR

Susumu Sasaki, Azusa Matsuda, C. W. Chu

研究成果: Article › 査読

24 被引用数 (Scopus)

抄録

This Letter reports on NMR studies of 13C in K3 C60 above and below Tc with an applied field of 2.93 T. It is found that non-single-exponential recovery data can be fitted by two components and normalized to an identical shape. With T1 defined in this way, Fermi-liquid behavior is identified above Tc, and a broadened Hebel-Slichter peak observed below Tc is well explained by the Eliashberg theory with 2Δ(0) /kBTc=4.31. The possibility of strong electron correlation and the origin of the multi-exponential recovery are discussed.

本文言語	English
ページ（範囲）	1670-1673
ページ数	4
ジャーナル	journal of the physical society of japan
巻	63
号	5
DOI	https://doi.org/10.1143/JPSJ.63.1670
出版ステータス	Published - 1994
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（全般）

文献へのアクセス

10.1143/JPSJ.63.1670

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引用スタイル

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title = "Fermi-Liquid Behavior and BCS s-Wave Pairing of K3C60 Observed by 13C-NMR",

abstract = "This Letter reports on NMR studies of 13C in K3 C60 above and below Tc with an applied field of 2.93 T. It is found that non-single-exponential recovery data can be fitted by two components and normalized to an identical shape. With T1 defined in this way, Fermi-liquid behavior is identified above Tc, and a broadened Hebel-Slichter peak observed below Tc is well explained by the Eliashberg theory with 2Δ(0) /kBTc=4.31. The possibility of strong electron correlation and the origin of the multi-exponential recovery are discussed.",

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AU - Chu, C. W.

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AB - This Letter reports on NMR studies of 13C in K3 C60 above and below Tc with an applied field of 2.93 T. It is found that non-single-exponential recovery data can be fitted by two components and normalized to an identical shape. With T1 defined in this way, Fermi-liquid behavior is identified above Tc, and a broadened Hebel-Slichter peak observed below Tc is well explained by the Eliashberg theory with 2Δ(0) /kBTc=4.31. The possibility of strong electron correlation and the origin of the multi-exponential recovery are discussed.

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KW - C-NMR

KW - Eliashberg theory

KW - Fermi liquid

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KW - KC

KW - constant-T T

KW - strong electron correlation

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