Electron thermal conductance in a ballistic nanowire in the presence of Rashba interaction and an in-plane magnetic field

被引：1

作者：

Koeik, Zeinab ^{[1
]}

Sakr, M. R. ^{[2
]}

机构：

[1] Beirut Arab Univ, Fac Sci, Dept Phys, Beirut 11072809, Lebanon

[2] Univ Alexandria, Fac Sci, Dept Phys, Alexandria 21511, Egypt

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2015年 / 74卷

关键词：

Electron thermal conductance; Rashba spin-orbit interaction; In-plane magnetic fields; Ballistic nanowire; Low temperature; THERMOELECTRIC PROPERTIES; QUANTIZATION; THERMOPOWER; TRANSPORT;

D O I：

10.1016/j.physe.2015.08.019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report on the thermal conductance of electrons in ballistic nanowires at low temperatures. The thermal conductance is calculated using the single-particle formalism taking into account local maxima in the dispersion relation. As the chemical potential increases, the thermal conductance follows the step-like quantization of the electric conductance that is dependent on the direction of the magnetic field. Results indicate that the Wiedemann-Franz law is violated at the jump of the electric conductance at very low temperatures. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：527 / 530

页数：4

共 22 条

[1] Thermometer for the 2D electron gas using 1D thermopower [J].

Appleyard, NJ ;

Nicholls, JT ;

Simmons, MY ;

Tribe, WR ;

Pepper, M .

PHYSICAL REVIEW LETTERS, 1998, 81 (16) :3491-3494

[2] Validity of the Wiedemann-Franz law in small molecular wires [J].

Balachandran, Vinitha ;

Bosisio, Riccardo ;

Benenti, Giuliano .

PHYSICAL REVIEW B, 2012, 86 (03)

[3]

BEENAKKER CWJ, 1991, SOLID STATE PHYS, V44, P1

[4] Thermopower of quantum nanowires in a magnetic field [J].

Bogachek, EN ;

Scherbakov, AG ;

Landman, U .

PHYSICAL REVIEW B, 1996, 54 (16) :11094-11097

[5] Nonlinear Peltier effect and thermoconductance in nanowires [J].

Bogachek, EN ;

Scherbakov, AG ;

Landman, U .

PHYSICAL REVIEW B, 1999, 60 (16) :11678-11682

[6] QUANTIZED TRANSMISSION OF A SADDLE-POINT CONSTRICTION [J].

BUTTIKER, M .

PHYSICAL REVIEW B, 1990, 41 (11) :7906-7909

[7]

Datta S., 1997, Electronic transport in mesoscopic systems, DOI DOI 10.1063/1.2807624

[8] Rashba effect and magnetic field in semiconductor quantum wires [J].

Debald, S ;

Kramer, B .

PHYSICAL REVIEW B, 2005, 71 (11)

[9] QUANTUM EFFECTS IN THERMAL AND THERMOELECTRIC TRANSPORT IN SEMICONDUCTOR NANOSTRUCTURES [J].

MOLENKAMP, LW ;

VANHOUTEN, H ;

STARING, AAM ;

BEENAKKER, CWJ .

PHYSICA SCRIPTA, 1993, T49B :441-445

[10]

Nitta J, 1997, PHYS REV LETT, V78, P1335, DOI 10.1103/PhysRevLett.78.1335

← 1 2 3 →