Electronic structure and superconducting energy gap in Rb3C60 single crystals studied by photoemission spectroscopy

Chun Gu; B. W. Veal; R. Liu; A. P. Paulikas; P. Kostic; H. Ding; K. Gofron; J. C. Campuzano; J. A. Schlueter; H. H. Wang; U. Geiser; J. M. Williams

doi:10.1103/PhysRevB.50.16566

Electronic structure and superconducting energy gap in Rb3C60 single crystals studied by photoemission spectroscopy

Chun Gu, B. W. Veal, R. Liu, A. P. Paulikas, P. Kostic, H. Ding, K. Gofron, J. C. Campuzano, J. A. Schlueter, H. H. Wang, U. Geiser, J. M. Williams

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26 Scopus citations

Abstract

We report an ultrahigh-resolution photoemission study of Rb3C60 single crystals (Tc=30.5 K) and the measurement of the superconducting energy gap. The crystals were cleaved at 13 K to expose the (111) plane. They show a sharp Fermi cutoff above Tc and a superconducting gap opening below Tc (2Δ/kBTc∼4.1 at 13 K). The valence band shows a ∼0.15-eV-wide band near EF that is consistent with calculations, and a broad band at 0.15-1.3 eV, possibly contributed by the surface C60 layer.

Original language	English
Pages (from-to)	16566-16569
Number of pages	4
Journal	Physical Review B
Volume	50
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.50.16566
State	Published - 1994
Externally published	Yes

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@article{688dc77815c841f9a625881592e8b9f6,

title = "Electronic structure and superconducting energy gap in Rb3C60 single crystals studied by photoemission spectroscopy",

abstract = "We report an ultrahigh-resolution photoemission study of Rb3C60 single crystals (Tc=30.5 K) and the measurement of the superconducting energy gap. The crystals were cleaved at 13 K to expose the (111) plane. They show a sharp Fermi cutoff above Tc and a superconducting gap opening below Tc (2Δ/kBTc∼4.1 at 13 K). The valence band shows a ∼0.15-eV-wide band near EF that is consistent with calculations, and a broad band at 0.15-1.3 eV, possibly contributed by the surface C60 layer.",

author = "Chun Gu and Veal, \{B. W.\} and R. Liu and Paulikas, \{A. P.\} and P. Kostic and H. Ding and K. Gofron and Campuzano, \{J. C.\} and Schlueter, \{J. A.\} and Wang, \{H. H.\} and U. Geiser and Williams, \{J. M.\}",

year = "1994",

doi = "10.1103/PhysRevB.50.16566",

language = "English",

volume = "50",

pages = "16566--16569",

journal = "Physical Review B",

issn = "0163-1829",

publisher = "American Physical Society",

number = "22",

}

TY - JOUR

T1 - Electronic structure and superconducting energy gap in Rb3C60 single crystals studied by photoemission spectroscopy

AU - Gu, Chun

AU - Veal, B. W.

AU - Liu, R.

AU - Paulikas, A. P.

AU - Kostic, P.

AU - Ding, H.

AU - Gofron, K.

AU - Campuzano, J. C.

AU - Schlueter, J. A.

AU - Wang, H. H.

AU - Geiser, U.

AU - Williams, J. M.

PY - 1994

Y1 - 1994

N2 - We report an ultrahigh-resolution photoemission study of Rb3C60 single crystals (Tc=30.5 K) and the measurement of the superconducting energy gap. The crystals were cleaved at 13 K to expose the (111) plane. They show a sharp Fermi cutoff above Tc and a superconducting gap opening below Tc (2Δ/kBTc∼4.1 at 13 K). The valence band shows a ∼0.15-eV-wide band near EF that is consistent with calculations, and a broad band at 0.15-1.3 eV, possibly contributed by the surface C60 layer.

AB - We report an ultrahigh-resolution photoemission study of Rb3C60 single crystals (Tc=30.5 K) and the measurement of the superconducting energy gap. The crystals were cleaved at 13 K to expose the (111) plane. They show a sharp Fermi cutoff above Tc and a superconducting gap opening below Tc (2Δ/kBTc∼4.1 at 13 K). The valence band shows a ∼0.15-eV-wide band near EF that is consistent with calculations, and a broad band at 0.15-1.3 eV, possibly contributed by the surface C60 layer.

UR - https://www.scopus.com/pages/publications/0000118928

U2 - 10.1103/PhysRevB.50.16566

DO - 10.1103/PhysRevB.50.16566

M3 - Article

AN - SCOPUS:0000118928

SN - 0163-1829

VL - 50

SP - 16566

EP - 16569

JO - Physical Review B

JF - Physical Review B

IS - 22

ER -

Electronic structure and superconducting energy gap in Rb3C60 single crystals studied by photoemission spectroscopy

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