FREQUENCY-DEPENDENT CONDUCTANCE OF TUNNEL-JUNCTIONS

被引：17

作者：

BRANDES, T

WEINMANN, D

KRAMER, B

机构：

[1] Physikalisch-Technische Bundesanstalt, Braunschweig, W-3300

来源：

EUROPHYSICS LETTERS | 1993年 / 22卷 / 01期

关键词：

D O I：

10.1209/0295-5075/22/1/010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The a.c. conductance of a quasi-one-dimensional system with a potential barrier is calculated in linear response. Its frequency dependence is used to define a dynamic capacitance. The influence of phase-breaking electron-phonon interactions is investigated. It is argued that Coulomb interaction is of minor importance at higher frequencies. The low-frequency limit for the suppression of Coulomb interaction is estimated for GaAs-AlGaAs point contacts. The relation between the dynamic and the static capacitance is discussed.

引用

页码：51 / 56

页数：6

共 20 条

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