Electron. coherence in a melting lead monolayer

被引：22

作者：

Baumberger, F ^{[1
]}

Auwärter, W ^{[1
]}

Greber, T ^{[1
]}

Osterwalder, J ^{[1
]}

机构：

[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

来源：

SCIENCE | 2004年 / 306卷 / 5705期

关键词：

D O I：

10.1126/science.1103984

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We used angle-resolved photoemission spectroscopy to measure the electronic dispersion and single-particle spectral, function in a liquid metal. A lead monolayer supported on a copper (111) surface was investigated as the temperature was raised through the melting transition of the film. Electron spectra and momentum distribution maps of the liquid film revealed three key features of the electronic structure of liquids: the persistence of a Fermi surface, the filling of band gaps, and the localization of the wave functions upon melting. Distinct coherence lengths for different sheets of the Fermi surface were found, indicating a strong dependence of the localization lengths on the character of the constituent atomic wave functions.

引用

页码：2221 / 2224

页数：4

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