Spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures
Rashba spin-orbit effects and electron correlations in the two-dimensional cylindrical lattices of square geometries are assessed using mesoscopic two-, three- and four-leg ladder structures. Here the electron transport properties are systematically calculated by including the spin-orbit coupling in...
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doaj-6f31ad1e3f2d4f589b5d90b9dd5a82ea2020-11-25T00:57:33ZengAIP Publishing LLCAIP Advances2158-32262016-05-0165055711055711-910.1063/1.4948384179691ADVSpin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structuresArmen N. Kocharian0Gayanath W. Fernando1Kun Fang2Kalum Palandage3Alexander V. Balatsky4Department of Physics, California State University, Los Angeles, CA 90032, USADepartment of Physics, University of Connecticut, Storrs, Connecticut 06269, USADepartment of Physics, University of Connecticut, Storrs, Connecticut 06269, USADepartment of Physics, Trinity College, Hartford, Connecticut 06106, USAAlbaNova University Center Nordita, SE-106 91 Stockholm, SwedenRashba spin-orbit effects and electron correlations in the two-dimensional cylindrical lattices of square geometries are assessed using mesoscopic two-, three- and four-leg ladder structures. Here the electron transport properties are systematically calculated by including the spin-orbit coupling in tight binding and Hubbard models threaded by a magnetic flux. These results highlight important aspects of possible symmetry breaking mechanisms in square ladder geometries driven by the combined effect of a magnetic gauge field spin-orbit interaction and temperature. The observed persistent current, spin and charge polarizations in the presence of spin-orbit coupling are driven by separation of electron and hole charges and opposite spins in real-space. The modeled spin-flip processes on the pairing mechanism induced by the spin-orbit coupling in assembled nanostructures (as arrays of clusters) engineered in various two-dimensional multi-leg structures provide an ideal playground for understanding spatial charge and spin density inhomogeneities leading to electron pairing and spontaneous phase separation instabilities in unconventional superconductors. Such studies also fall under the scope of current challenging problems in superconductivity and magnetism, topological insulators and spin dependent transport associated with numerous interfaces and heterostructures.http://dx.doi.org/10.1063/1.4948384 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Armen N. Kocharian Gayanath W. Fernando Kun Fang Kalum Palandage Alexander V. Balatsky |
spellingShingle |
Armen N. Kocharian Gayanath W. Fernando Kun Fang Kalum Palandage Alexander V. Balatsky Spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures AIP Advances |
author_facet |
Armen N. Kocharian Gayanath W. Fernando Kun Fang Kalum Palandage Alexander V. Balatsky |
author_sort |
Armen N. Kocharian |
title |
Spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures |
title_short |
Spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures |
title_full |
Spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures |
title_fullStr |
Spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures |
title_full_unstemmed |
Spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures |
title_sort |
spin-orbit coupling, electron transport and pairing instabilities in two-dimensional square structures |
publisher |
AIP Publishing LLC |
series |
AIP Advances |
issn |
2158-3226 |
publishDate |
2016-05-01 |
description |
Rashba spin-orbit effects and electron correlations in the two-dimensional cylindrical lattices of square geometries are assessed using mesoscopic two-, three- and four-leg ladder structures. Here the electron transport properties are systematically calculated by including the spin-orbit coupling in tight binding and Hubbard models threaded by a magnetic flux. These results highlight important aspects of possible symmetry breaking mechanisms in square ladder geometries driven by the combined effect of a magnetic gauge field spin-orbit interaction and temperature. The observed persistent current, spin and charge polarizations in the presence of spin-orbit coupling are driven by separation of electron and hole charges and opposite spins in real-space. The modeled spin-flip processes on the pairing mechanism induced by the spin-orbit coupling in assembled nanostructures (as arrays of clusters) engineered in various two-dimensional multi-leg structures provide an ideal playground for understanding spatial charge and spin density inhomogeneities leading to electron pairing and spontaneous phase separation instabilities in unconventional superconductors. Such studies also fall under the scope of current challenging problems in superconductivity and magnetism, topological insulators and spin dependent transport associated with numerous interfaces and heterostructures. |
url |
http://dx.doi.org/10.1063/1.4948384 |
work_keys_str_mv |
AT armennkocharian spinorbitcouplingelectrontransportandpairinginstabilitiesintwodimensionalsquarestructures AT gayanathwfernando spinorbitcouplingelectrontransportandpairinginstabilitiesintwodimensionalsquarestructures AT kunfang spinorbitcouplingelectrontransportandpairinginstabilitiesintwodimensionalsquarestructures AT kalumpalandage spinorbitcouplingelectrontransportandpairinginstabilitiesintwodimensionalsquarestructures AT alexandervbalatsky spinorbitcouplingelectrontransportandpairinginstabilitiesintwodimensionalsquarestructures |
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