Effect of electric field on the ratio between the rashba and dresselhaus parameters in III–V heterostructures
- Authors: Degtyarev V.E.1, Khazanova S.V.1, Konakov A.A.1
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Affiliations:
- National Research Lobachevsky State University of Nizhny Novgorod
- Issue: Vol 51, No 11 (2017)
- Pages: 1409-1414
- Section: XXI International Symposium “Nanophysics and Nanoelectronics”, Nizhny Novgorod, March 13–16, 2017
- URL: https://journals.rcsi.science/1063-7826/article/view/201475
- DOI: https://doi.org/10.1134/S1063782617110094
- ID: 201475
Cite item
Abstract
The size-quantized energy subbands and envelope wave functions for [001] quantum wells based on zinc-blende III–V semiconductors are numerically calculated using the eight-band Kane model and finite-difference discretization scheme in coordinate space. The effect of the quantum-well band parameters and external electric field oriented along the structure growth direction on the ratio between the Rashba and Dresselhaus spin–orbit coupling parameters is studied. It is demonstrated that at certain electric-field values the spin–orbit coupling parameters in GaAs/InGaAs structures can be equal, which ensures the condition for forming stable spin helices. In addition, it is established that the spin–orbit coupling linear in wave vector in symmetric GaAs/InGaAs wells can disappear under certain well widths and barrier chemical compositions.
About the authors
V. E. Degtyarev
National Research Lobachevsky State University of Nizhny Novgorod
Email: khazanova@phys.unn.ru
Russian Federation, Nizhny Novgorod, 603950
S. V. Khazanova
National Research Lobachevsky State University of Nizhny Novgorod
Author for correspondence.
Email: khazanova@phys.unn.ru
Russian Federation, Nizhny Novgorod, 603950
A. A. Konakov
National Research Lobachevsky State University of Nizhny Novgorod
Email: khazanova@phys.unn.ru
Russian Federation, Nizhny Novgorod, 603950