Effect of Rashba spin-orbit coupling and external magnetic field on electronic minibands in highly strained one-layer quantum ring superlattice

被引：10

作者：

Mughnetsyan, Vram ^{[1
]}

Manaselyan, Aram ^{[1
]}

Kirakosyan, Albert ^{[1
]}

机构：

[1] Yerevan State Univ, Dept Solid State Phys, Alex Manoogian 1, Yerevan 0025, Armenia

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2017年 / 104卷

关键词：

Quantum ring superlattice; Spin-orbit interaction; Elastic strain; Magnetic field; Energy dispersion; INTERDIFFUSION; SPECTRA; STATES;

D O I：

10.1016/j.spmi.2017.02.001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The Rashba spin-orbit coupling for electronic states in a strained one layer superlattice, composed of InAs/GaAs quantum rings has been investigated in the presence of uniform magnetic field directed perpendicular to the lattice plane. The dispersion surfaces and the energy dependencies on the magnetic field induction are obtained by the exact diagonalization procedure using the Fourier transformation to the momentum space.. The characteristic splitting of the mini-bands as well as the crossings of the dispersion surfaces at the high symmetry points in the Brillouin zone have been observed. An upward shift of the minibands by about 60 meV due to strain in superlattice has been observed. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：10 / 18

页数：9

共 41 条

[1] Interplay between valley polarization and electron-electron interaction in a graphene ring [J].

Abergel, D. S. L. ;

Apalkov, Vadim M. ;

Chakraborty, Tapash .

PHYSICAL REVIEW B, 2008, 78 (19)

[2] SIGNIFICANCE OF ELECTROMAGNETIC POTENTIALS IN THE QUANTUM THEORY [J].

AHARONOV, Y ;

BOHM, D .

PHYSICAL REVIEW, 1959, 115 (03) :485-491

[3] Strain distributions in quantum dots of arbitrary shape [J].

Andreev, AD ;

Downes, JR ;

Faux, DA ;

O'Reilly, EP .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (01) :297-305

[4] ELASTIC MISFIT STRESS-RELAXATION IN HIGHLY STRAINED INGAAS/GAAS STRUCTURES [J].

ANDROUSSI, Y ;

LEFEBVRE, A ;

COURBOULES, B ;

GRANDJEAN, N ;

MASSIES, J ;

BOUHACINA, T ;

AIME, JP .

APPLIED PHYSICS LETTERS, 1994, 65 (09) :1162-1164

[5]

Ashkroft NW., 1976, SOLID STATE PHYS

[6]

Awschalom DD, 2002, NANOSCI TECHNOL, P147

[7] Effect of interdiffusion on electronic states of strain-free Gaussian-shaped double quantum ring superlattice [J].

Aziz-Aghchegala, V. L. ;

Mughnetsyan, V. N. ;

Kirakosyan, A. A. .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2015, 65 :30-35

[8] Effect of interdiffusion on electronic states in one-layer quantum ring superlattice [J].

Aziz-Aghchegala, V. L. ;

Mughnetsyan, V. N. ;

Kirakosyan, A. A. .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2014, 64 :51-56

[9] JOSEPHSON BEHAVIOR IN SMALL NORMAL ONE-DIMENSIONAL RINGS [J].

BUTTIKER, M ;

IMRY, Y ;

LANDAUER, R .

PHYSICS LETTERS A, 1983, 96 (07) :365-367

[10] OSCILLATORY EFFECTS AND THE MAGNETIC-SUSCEPTIBILITY OF CARRIERS IN INVERSION-LAYERS [J].

BYCHKOV, YA ;

RASHBA, EI .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (33) :6039-6045

← 1 2 3 4 5 →