2-DIMENSIONAL ELECTRON-GAS IN SURFACE RYDBERG STATES - LIMITS SET BY AUGER DECAY

被引：12

作者：

GAO, SW

LUNDQVIST, BI

机构：

[1] Institute of Theoretical Physics, Chalmers University of Technology

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 84卷 / 1-2期

关键词：

D O I：

10.1016/0038-1098(92)90313-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The creation of a two-dimensional electron gas (2DEG) by pumping Rydberg surface states on a metal surface with a laser is proposed and analyzed. Assuming Auger electron transitions between surface electron states to dominate the relaxation dynamics of the surface Rydberg electrons, maximum density n(s) and lifetime tau of this 2DEG are calculated. On Cu(111) values of n(s) above 10(11) cm-2 and of tau beyond 100 femtoseconds may be established. Conditions for optimal substrate are formulated.

引用

页码：147 / 150

页数：4

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