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Theoretical Investigations of Spin Splittings and Optimization of the Rashba Coefficient in Asymmetric AlSb/InAs/GaSb Heterostructures

Cartoixà, X. and Ting, D. Z.-Y. and McGill, T. C. (2002) Theoretical Investigations of Spin Splittings and Optimization of the Rashba Coefficient in Asymmetric AlSb/InAs/GaSb Heterostructures. Journal of Computational Electronics, 1 (1-2). pp. 141-146. ISSN 1569-8025. doi:10.1023/a:1020796618175.

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We use the Effective Bond Orbital Model (EBOM) method to examine the spin splitting due to the Rashba effect in AlSb/InAs/GaSb asymmetric heterostructures. We have explored different thicknesses of the constituent materials and we have found for the resulting two-dimensional electron gas (2DEG) in the optimized structure a theoretical value of the Rashba constant α_R = 51 × 10⁻¹⁰ eV·cm. This is, to our knowledge, the largest predicted value for this parameter. We provide an intuitive explanation for the behavior of the spins in the 2DEG. Finally, we study the effect of wide layers on the Rashba coefficient.

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Additional Information:© 2002 Kluwer Academic Publishers. We gratefully acknowledge the support of the Defense Advanced Research Projects Agency, as monitored by the Office of Naval Research under contract No. N00014-99-1-1006. A part of the work described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, and was sponsored by the Defense Advanced Research Projects Agency’s Spins in Semiconductors (SpinS) program.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Office of Naval Research (ONR)N00014-99-1-1006
Subject Keywords:two-dimensional electron gas, 2DEG, optimization, asymmetric quantum well, Rashba, EBOM
Issue or Number:1-2
Record Number:CaltechAUTHORS:20191112-111435523
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Official Citation:Cartoixà, X., Ting, DY. & McGill, T. Journal of Computational Electronics (2002) 1: 141.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99809
Deposited By: Tony Diaz
Deposited On:12 Nov 2019 22:51
Last Modified:16 Nov 2021 17:49

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