Effects of Electron-Electron Scattering in Wide Ballistic Microcontacts

被引：23
|
作者：
Nagaev, K. E. [1 ]
Ayvazyan, O. S. [2 ]
机构：
[1] Inst Radioengn & Elect, Moscow 125009, Russia
[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 21期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1103/PhysRevLett.101.216807
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We calculate the corrections to the Sharvin conductance of ballistic multimode microcontacts that result from electron-electron scattering in the leads. Using a semiclassical Boltzmann equation, we obtain that these corrections are positive and scale with temperature as T(2)ln(E(F)/T) for three-dimensional contacts and as T for two-dimensional ones. These results are relevant to recent experiments on two-dimensional electron gas contacts.
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