INTERFERENCE AND DEPHASING BY ELECTRON-ELECTRON INTERACTION ON LENGTH SCALES SHORTER THAN THE ELASTIC MEAN FREE-PATH

被引：155

作者：

YACOBY, A ^{[1
]}

SIVAN, U ^{[1
]}

UMBACH, CP ^{[1
]}

HONG, JM ^{[1
]}

机构：

[1] WEIZMANN INST SCI,IL-76100 REHOVOT,ISRAEL

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.66.1938

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A modified Young's double-slit experiment is realized for electrons in a high-mobility two-dimensional electron gas (2DEG). The observed quantum interference is employed to study dephasing by electron-electron interaction on length scales shorter than the elastic mean free path. It is found that the measured phase-breaking length agrees very well with theoretical calculations of the e-e mean free path in an ideal 2DEG. In contrast to the diffusive regime, dephasing occurs via e-e scattering events with an energy exchange on the order of the carrier excess energy.

引用

页码：1938 / 1941

页数：4

共 12 条

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