Magnetic focusing with quantum point contacts in the non-equilibrium transport regime

被引：7

作者：

Chen, T. -M. ^{[1
,2
]}

Pepper, M. ^{[3
]}

Farrer, I. ^{[2
]}

Ritchie, D. A. ^{[2
]}

Jones, G. A. C. ^{[2
]}

机构：

[1] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan

[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[3] UCL, Dept Elect & Elect Engn, London WC1E 7JE, England

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

DIMENSIONAL ELECTRON-GAS; BALLISTIC RESISTANCE; CONDUCTANCE; FIELD; WIRE;

D O I：

10.1063/1.4819489

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report an experimental investigation of magnetic focusing in the 1D non-equilibrium transport regime and utilize it to study the energy variation of electrons propagating through a quantum point contact. The results give insight into the behavior of electrons with different energies when current is both unidirectional and bidirectional, in particular, a splitting of the focusing peaks which demonstrates that the intrinsic resistance within the point contact is negligible and that the voltage drop is at least 3 mu m away from the ends of the point contact. (C) 2013 AIP Publishing LLC.

引用

页数：4

共 40 条

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