Observation of orientation- and k-dependent Zeeman spin-splitting in hole quantum wires on (100)-oriented AlGaAs/GaAs heterostructures

被引：35

作者：

Chen, J. C. H. ^{[1
]}

Klochan, O. ^{[1
]}

Micolich, A. P. ^{[1
]}

Hamilton, A. R. ^{[1
]}

Martin, T. P. ^{[1
]}

Ho, L. H. ^{[1
]}

Zulicke, U. ^{[2
,3
]}

Reuter, D. ^{[4
]}

Wieck, A. D. ^{[4
]}

机构：

[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

[2] Massey Univ, Inst Fundamental Sci, Palmerston North 4442, New Zealand

[3] Massey Univ, MacDiarmid Inst Adv Mat & Nanotechnol, Palmerston North 4442, New Zealand

[4] Ruhr Univ Bochum, D-44780 Bochum, Germany

来源：

NEW JOURNAL OF PHYSICS | 2010年 / 12卷

基金：

澳大利亚研究理事会;

关键词：

SPINTRONICS; ELECTRON;

D O I：

10.1088/1367-2630/12/3/033043

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, We study the Zeeman spin-splitting in hole quantum wires oriented along the [011] and [01 (1) over bar] crystallographic axes of a high mobility undoped (100)-oriented AlGaAs/GaAs heterostructure. Our data show that the spin-splitting can be switched 'on' (finite g*) or 'off' (zero g*) by rotating the field from a parallel to a perpendicular orientation with respect to the wire, and the properties of the wire are identical for the two orientations with respect to the crystallographic axes. We also find that the g-factor in the parallel orientation decreases as the wire is narrowed. This is in contrast to electron quantum wires, where the g-factor is enhanced by exchange effects as the wire is narrowed. This is evidence for a k-dependent Zeeman splitting that arises from the spin-3/2 nature of holes.

引用

页数：11

共 30 条

[1]

Ashcroft N., 2011, Solid State Physics

[2] Challenges for semiconductor spintronics [J].

Awschalom, David D. ;

Flatte, Michael E. .

NATURE PHYSICS, 2007, 3 (03) :153-159

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

BUTTIKER, M .

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

[4] Fabrication of induced two-dimensional hole systems on (311)A GaAs [J].

Clarke, WR ;

Micolich, AP ;

Hamilton, AR ;

Simmons, MY ;

Muraki, K ;

Hirayama, Y .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (02)

[5] Large variations in the hole spin splitting of quantum-wire subband edges [J].

Csontos, Dan ;

Zulicke, Ulrich .

PHYSICAL REVIEW B, 2007, 76 (07)

[6] Spin precession and alternating spin polarization in spin-3/2 hole systems [J].

Culcer, Dimitrie ;

Lechner, C. ;

Winkler, R. .

PHYSICAL REVIEW LETTERS, 2006, 97 (10)

[7] Enhanced g factors of a one-dimensional hole gas with quantized conductance [J].

Daneshvar, AJ ;

Ford, CJB ;

Hamilton, AR ;

Simmons, MY ;

Pepper, M ;

Ritchie, DA .

PHYSICAL REVIEW B, 1997, 55 (20) :13409-13412

[8] Zeeman splitting in ballistic hole quantum wires [J].

Danneau, R. ;

Klochan, O. ;

Clarke, W. R. ;

Ho, L. H. ;

Micolich, A. P. ;

Simmons, M. Y. ;

Hamilton, A. R. ;

Pepper, M. ;

Ritchie, D. A. ;

Zulicke, U. .

PHYSICAL REVIEW LETTERS, 2006, 97 (02)

[9] Conductance quantization and the 0.7x2e2/h conductance anomaly in one-dimensional hole systems -: art. no. 012107 [J].

Danneau, R ;

Clarke, WR ;

Klochan, O ;

Micolich, AP ;

Hamilton, AR ;

Simmons, MY ;

Pepper, M ;

Ritchie, DA .

APPLIED PHYSICS LETTERS, 2006, 88 (01)

[10] 0.7 structure and zero bias anomaly in ballistic hole quantum wires [J].

Danneau, R. ;

Klochan, O. ;

Clarke, W. R. ;

Ho, L. H. ;

Micolich, A. P. ;

Simmons, M. Y. ;

Hamilton, A. R. ;

Pepper, M. ;

Ritchie, D. A. .

PHYSICAL REVIEW LETTERS, 2008, 100 (01)

← 1 2 3 →