2-DIMENSIONAL BAND-STRUCTURE OF A LI LAYER - LI/BE(0001)

被引：44

作者：

WATSON, GM ^{[1
]}

BRUHWILER, PA ^{[1
]}

PLUMMER, EW ^{[1
]}

SAGNER, HJ ^{[1
]}

FRANK, KH ^{[1
]}

机构：

[1] MAX PLANCK GESELL, FRITZ HABER INST, W-1000 BERLIN 33, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.65.468

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Angle-resolved photoemission and inverse photoemission have been used to measure the two-dimensional dispersion of the energy bands of a single dense layer of Li grown on Be(0001). These two techniques show excellent agreement for both the Fermi-level crossing and the effective mass of the Li valence band. This band is parabolic, with an effective mass (m*/m) of 1.8, which is larger than that predicted for an isolated atomic layer. The large effective mass may be due to hybridization with the substrate bands. An avoided band crossing of the Li band and the Be surface state is observed. © 1990 The American Physical Society.

引用

页码：468 / 471

页数：4

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