Development of the electronic structure in a K-doped C-60 monolayer on a Ag(1 1 1) surface

L.H Tjeng; R. Hesper; A.C L Heessels; A. Heeres; H.T. Jonkman; G.A Sawatzky

doi:10.1016/s0038-1098(97)00126-9

Development of the electronic structure in a K-doped C-60 monolayer on a Ag(1 1 1) surface

L.H Tjeng, R. Hesper, A.C L Heessels, A. Heeres, H.T. Jonkman, G.A Sawatzky

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Abstract

We present an electron spectroscopy study of the development of the electronic structure in the K-doped C-60 monolayer on a Ag(1 1 1) surface. We find that the occupation of the lowest unoccupied molecular orbital (LUMO) of the C-60 can be varied continuously from 0.75 (undoped) to 6.0 (fully doped). We also find that the density of states at the Fermi level for a doping level corresponding to 3 electrons per C-60 is at least a factor of two higher than that found from photoemission on bulk K3C60. This enhanced density of states at the Fermi level might suggest an increased superconducting transition temperature for the monolayer system. (C) 1997 Elsevier Science Ltd.

Original language	English
Pages (from-to)	31-35
Number of pages	5
Journal	Solid State Communications
Volume	103
Issue number	1
DOIs	https://doi.org/10.1016/s0038-1098(97)00126-9
Publication status	Published - Jul-1997

Keywords

fullerenes
surfaces and interfaces
photoelectron spectroscopies
RAY-ABSORPTION-SPECTROSCOPY
METAL-SURFACES
PHOTOEMISSION SPECTRA
POTASSIUM FULLERIDES
CHARGE-TRANSFER
FERMI-LEVEL
SOLID C-60
BAND-GAP
STATES
GROWTH

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@article{29314f596ed24af3bad8d11db23d4834,

title = "Development of the electronic structure in a K-doped C-60 monolayer on a Ag(1 1 1) surface",

abstract = "We present an electron spectroscopy study of the development of the electronic structure in the K-doped C-60 monolayer on a Ag(1 1 1) surface. We find that the occupation of the lowest unoccupied molecular orbital (LUMO) of the C-60 can be varied continuously from 0.75 (undoped) to 6.0 (fully doped). We also find that the density of states at the Fermi level for a doping level corresponding to 3 electrons per C-60 is at least a factor of two higher than that found from photoemission on bulk K3C60. This enhanced density of states at the Fermi level might suggest an increased superconducting transition temperature for the monolayer system. (C) 1997 Elsevier Science Ltd.",

keywords = "fullerenes, surfaces and interfaces, photoelectron spectroscopies, RAY-ABSORPTION-SPECTROSCOPY, METAL-SURFACES, PHOTOEMISSION SPECTRA, POTASSIUM FULLERIDES, CHARGE-TRANSFER, FERMI-LEVEL, SOLID C-60, BAND-GAP, STATES, GROWTH",

author = "L.H Tjeng and R. Hesper and Heessels, {A.C L} and A. Heeres and H.T. Jonkman and G.A Sawatzky",

note = "Relation: http://www.rug.nl/scheikunde/ date_submitted:2006 Rights: University of Groningen. Materials Science Centre",

year = "1997",

month = jul,

doi = "10.1016/s0038-1098(97)00126-9",

language = "English",

volume = "103",

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T1 - Development of the electronic structure in a K-doped C-60 monolayer on a Ag(1 1 1) surface

AU - Tjeng, L.H

AU - Hesper, R.

AU - Heessels, A.C L

AU - Heeres, A.

AU - Jonkman, H.T.

AU - Sawatzky, G.A

N1 - Relation: http://www.rug.nl/scheikunde/ date_submitted:2006 Rights: University of Groningen. Materials Science Centre

PY - 1997/7

Y1 - 1997/7

N2 - We present an electron spectroscopy study of the development of the electronic structure in the K-doped C-60 monolayer on a Ag(1 1 1) surface. We find that the occupation of the lowest unoccupied molecular orbital (LUMO) of the C-60 can be varied continuously from 0.75 (undoped) to 6.0 (fully doped). We also find that the density of states at the Fermi level for a doping level corresponding to 3 electrons per C-60 is at least a factor of two higher than that found from photoemission on bulk K3C60. This enhanced density of states at the Fermi level might suggest an increased superconducting transition temperature for the monolayer system. (C) 1997 Elsevier Science Ltd.

AB - We present an electron spectroscopy study of the development of the electronic structure in the K-doped C-60 monolayer on a Ag(1 1 1) surface. We find that the occupation of the lowest unoccupied molecular orbital (LUMO) of the C-60 can be varied continuously from 0.75 (undoped) to 6.0 (fully doped). We also find that the density of states at the Fermi level for a doping level corresponding to 3 electrons per C-60 is at least a factor of two higher than that found from photoemission on bulk K3C60. This enhanced density of states at the Fermi level might suggest an increased superconducting transition temperature for the monolayer system. (C) 1997 Elsevier Science Ltd.

KW - fullerenes

KW - surfaces and interfaces

KW - photoelectron spectroscopies

KW - RAY-ABSORPTION-SPECTROSCOPY

KW - METAL-SURFACES

KW - PHOTOEMISSION SPECTRA

KW - POTASSIUM FULLERIDES

KW - CHARGE-TRANSFER

KW - FERMI-LEVEL

KW - SOLID C-60

KW - BAND-GAP

KW - STATES

KW - GROWTH

U2 - 10.1016/s0038-1098(97)00126-9

DO - 10.1016/s0038-1098(97)00126-9

M3 - Article

VL - 103

SP - 31

EP - 35

JO - Solid State Communications

JF - Solid State Communications

IS - 1

ER -

Development of the electronic structure in a K-doped C-60 monolayer on a Ag(1 1 1) surface

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Keywords

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