FERMI-EDGE SINGULARITY IN RESONANT-TUNNELING

被引：163

作者：

GEIM, AK ^{[1
]}

MAIN, PC ^{[1
]}

LASCALA, N ^{[1
]}

EAVES, L ^{[1
]}

FOSTER, TJ ^{[1
]}

BETON, PH ^{[1
]}

SAKAI, JW ^{[1
]}

SHEARD, FW ^{[1
]}

HENINI, M ^{[1
]}

HILL, G ^{[1
]}

PATE, MA ^{[1
]}

机构：

[1] UNIV SHEFFIELD,DEPT ELECT & ELECTR ENGN,SHEFFIELD S1 3JD,S YORKSHIRE,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.72.2061

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed a Fermi-edge singularity in the tunneling current between a two-dimensional electron gas (2DEG) and a zero-dimensional localized state. A sharp peak in the tunnel current is observed when the energy of the localized state matches the Fermi energy of the 2DEG. The peak grows and becomes sharper as the temperature is decreased to our lowest temperature of 70 mK. We attribute the singularity to the Coulomb interaction between the tunneling electron on the localized site and the Fermi sea.

引用

页码：2061 / 2064

页数：4

共 36 条

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