Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/85904
Title: Ballistic spin transport in exciton gases
Authors: Kavokin, A. V.
Vladimirova, M.
Jouault, B.
Liew, Timothy Chi Hin
Leonard, J. R.
Butov, L. V.
Keywords: Spin transport
Excitons
Issue Date: 2013
Source: Kavokin, A. V., Vladimirova, M., Jouault, B., Liew, T. C. H., Leonard, J. R., & Butov, L. V. (2013). Ballistic spin transport in exciton gases. Physical Review B, 88(19), 195309-.
Series/Report no.: Physical Review B
Abstract: Traditional spintronics relies on spin transport by charge carriers, such as electrons in semiconductor crystals. The challenges for the realization of long-range electron spin transport include rapid spin relaxation due to electron scattering. Scattering and, in turn, spin relaxation can be effectively suppressed in excitonic devices where the spin currents are carried by electrically neutral bosonic quasiparticles: excitons or exciton-polaritons. They can form coherent quantum liquids that carry spins over macroscopic distances. The price to pay is a finite lifetime of the bosonic spin carriers. We present the theory of exciton ballistic spin transport which may be applied to a range of systems supporting bosonic spin transport, in particular to indirect excitons in coupled quantum wells. We describe the effect of spin-orbit interaction for the electron and the hole on the exciton spin, account for the Zeeman effect induced by external magnetic fields and long-range and short-range exchange splittings of the exciton resonances. We also consider exciton transport in the nonlinear regime and discuss the definitions of the exciton spin current, polarization current, and spin conductivity.
URI: https://hdl.handle.net/10356/85904
http://hdl.handle.net/10220/43886
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.88.195309
Rights: © 2013 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.88.195309]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
Ballistic spin transport in exciton gases.pdf5.78 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 10

20
Updated on Mar 10, 2021

PublonsTM
Citations 10

18
Updated on Mar 3, 2021

Page view(s)

340
Updated on Jun 25, 2022

Download(s) 50

73
Updated on Jun 25, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.