BAND DISPERSION IN C-60(111) - AN ANGLE-RESOLVED PHOTOEMISSION-STUDY

被引：27

作者：

BENNING, PJ ^{[1
]}

OLSON, CG ^{[1
]}

LYNCH, DW ^{[1
]}

WEAVER, JH ^{[1
]}

机构：

[1] UNIV MINNESOTA,DEPT MAT SCI & CHEM ENGN,MINNEAPOLIS,MN 55455

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.50.11239

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Angle-resolved photoemission studies of single-crystal C-60(111) films grown on GeS(001) reveal changes in valence feature line shape with emission angle and photon energy that are indicative of band dispersion. For an excitation energy (h nu) of 10 eV, normal emission spectra show four sharp structures within the similar to 1.1-eV-wide valence feature derived from the second highest molecular orbital (HOMO-1) of C-60. For h nu=8.1 eV, the 1-eV-wide HOMO-derived feature exhibits changes with emission angle mainly due to dispersion of 0.6 eV in the unoccupied bands. The distribution of electronic states underlying HOMO and HOMO -1 indicates that vibronic loss structures are not necessary to explain the width of these valence features.

引用

页码：11239 / 11242

页数：4

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