EXPERIMENTAL-EVIDENCE FOR 400-MEV VALENCE-BAND DISPERSION IN SOLID C-60

被引：64

作者：

GENSTERBLUM, G

PIREAUX, JJ

THIRY, PA

CAUDANO, R

BUSLAPS, T

JOHNSON, RL

LELAY, G

ARISTOV, V

GUNTHER, R

TALEBIBRAHIMI, A

INDLEKOFER, G

PETROFF, Y

机构：

[1] UNIV HAMBURG,INST EXPTL PHYS 2,D-22761 HAMBURG,GERMANY

[2] CTR RECH MECANISMES CROISSANCE CRISTALLINE,F-13288 MARSEILLE 9,FRANCE

[3] CTR UNIV PARIS SUD,UTILISAT RAYONNEMENT ELECTROMAGNET LAB,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.48.14756

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Angle-resolved electron distribution curves have been measured for two different excitation energies on heteroepitaxial C60(111) films. At HBARomega = 29 eV, the limited k(parallel-to) resolution together with broadening induced by vibronic excitations results in a weak dependence of the peak positions and line shapes of the photoemission features on the emission angle. We demonstrate that at the low photon energy of HBARomega = 8.1 eV the k(parallel-to) resolution becomes sufficient to resolve two bands in the feature derived from the highest-occupied molecular orbital which show a dispersion of the order of 400 meV.

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页码：14756 / 14759

页数：4

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