Acoustoelectric current through a quantum wire containing a point impurity

被引：4

作者：

Kokurin, I. A. ^{[1
]}

Margulis, V. A. ^{[1
]}

机构：

[1] Mordovian NP Ogarev State Univ, Saransk 430000, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2007年 / 105卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

NANOSTRUCTURES; OSCILLATIONS; CHANNEL;

D O I：

10.1134/S1063776107070461

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A dc electric current due to a flow of ultrasonic phonons through a quantum wire containing an isolated point impurity is analyzed theoretically. An explicit expression for the acoustoelectric (AE) current is obtained and its dependence on the chemical potential of the electron gas and the induction of the external magnetic field is investigated. It is shown that a point impurity may lead to a partial or complete destruction of the steplike structure of the AE current as a function of the chemical potential.

引用

页码：206 / 209

页数：4

共 9 条

[1] Smearing of quantum states and giant oscillations of the acoustoelectric current in a quantum channel [J].

Bo, OL ;

Totland, H ;

Galperin, Y .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (40) :8381-8395

[2]

GEILER VA, 1997, SOV PHYS JETP, V84, P1209

[3]

GEILER VA, 1997, ZH EKSP TEOR FIZ, V111, P2215

[4] Giant quantum oscillations of acoustoelectric effect in nanostructures [J].

Gurevich, VL ;

Pevzner, VB ;

Iafrate, GJ .

PHYSICAL REVIEW LETTERS, 1996, 77 (18) :3881-3884

[5] Acoustoelectric effect in nanostructures: Role of quasimomentum balance [J].

Gurevich, VL ;

Kozub, VI ;

Pevzner, VB .

PHYSICAL REVIEW B, 1998, 58 (19) :13088-13093

[6] Quantization of acoustoelectric current in a ballistic channel [J].

Margulis, VA ;

Trushin, MP ;

Shorokhov, AV .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2002, 94 (06) :1160-1168

[7]

MARGULIS VA, 2002, ZH EKSP TEOR FIZ, V121, P1352

[8]

SHILTON JM, 1996, J PHYS-CONDENS MAT, V8, P531

[9]

YU N, 1988, 0 RANGE POTENTIAL TH

← 1 →