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Title: Electronic States and Persistent Currents in Nanowire Quantum Ring

Abstract

A new model of a quantum ring defined inside a nanowire is proposed. The one-particle Hamiltonian for electron in [111]-oriented nanowire quantum ring is constructed taking into account both Rashba and Dresselhaus spin-orbit coupling. The energy levels as a function of magnetic field are found using the exact numerical diagonalization. The persistent currents (both charge and spin) are calculated. The specificity of spin-orbit coupling and arising anticrossings in energy spectrum lead to unusual features in persistent current behavior. The variation of magnetic field or carrier concentration by means of gates can lead to pure spin persistent current with the charge current being zero.

Authors:
 [1]
  1. Mordovia State University, Institute of Physics and Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22749991
Resource Type:
Journal Article
Journal Name:
Semiconductors
Additional Journal Information:
Journal Volume: 52; Journal Issue: 4; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7826
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ENERGY LEVELS; ENERGY SPECTRA; L-S COUPLING; MAGNETIC FIELDS; NANOWIRES

Citation Formats

Kokurin, I. A., E-mail: kokurinia@math.mrsu.ru. Electronic States and Persistent Currents in Nanowire Quantum Ring. United States: N. p., 2018. Web. doi:10.1134/S1063782618040188.
Kokurin, I. A., E-mail: kokurinia@math.mrsu.ru. Electronic States and Persistent Currents in Nanowire Quantum Ring. United States. doi:10.1134/S1063782618040188.
Kokurin, I. A., E-mail: kokurinia@math.mrsu.ru. Sun . "Electronic States and Persistent Currents in Nanowire Quantum Ring". United States. doi:10.1134/S1063782618040188.
@article{osti_22749991,
title = {Electronic States and Persistent Currents in Nanowire Quantum Ring},
author = {Kokurin, I. A., E-mail: kokurinia@math.mrsu.ru},
abstractNote = {A new model of a quantum ring defined inside a nanowire is proposed. The one-particle Hamiltonian for electron in [111]-oriented nanowire quantum ring is constructed taking into account both Rashba and Dresselhaus spin-orbit coupling. The energy levels as a function of magnetic field are found using the exact numerical diagonalization. The persistent currents (both charge and spin) are calculated. The specificity of spin-orbit coupling and arising anticrossings in energy spectrum lead to unusual features in persistent current behavior. The variation of magnetic field or carrier concentration by means of gates can lead to pure spin persistent current with the charge current being zero.},
doi = {10.1134/S1063782618040188},
journal = {Semiconductors},
issn = {1063-7826},
number = 4,
volume = 52,
place = {United States},
year = {2018},
month = {4}
}