Marinescu, D. C. and Weigele, Pirmin J. and Zumbühl, Dominik M. and Egues, J. Carlos. (2019) ClosedForm Weak Localization Magnetoconductivity in Quantum Wells with Arbitrary Rashba and Dresselhaus SpinOrbit Interactions. Physical Review Letters, 122 (15). p. 156601.
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Official URL: https://edoc.unibas.ch/75217/
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Abstract
We derive a closedform expression for the weak localization (WL) corrections to the magnetoconductivity of a 2D electron system with arbitrary Rashba alpha and Dresselhaus beta (linear) and beta(3) (cubic) spinorbit interaction couplings, in a perpendicular magnetic field geometry. In a system of reference with an inplane (z) over cap axis chosen as the high spinsymmetry direction at alpha = beta, we formulate a new algorithm to calculate the three independent contributions that lead to WL. The antilocalization is counterbalanced by the term associated with the spin relaxation along (z) over cap, dependent only on alpha  beta. The other term is generated by two identical scattering modes characterized by spinrelaxation rates which are explicit functions of the orientation of the scattered momentum. Excellent agreement is found with data from GaAs quantum wells, where, in particular, our theory correctly captures the shift of the minima of the WL curves as a function of alpha/beta. This suggests that the anisotropy of the effective spinrelaxation rates is fundamental to understanding the effect of the spinorbit coupling in transport.
Faculties and Departments:  05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Quantenphysik (Zumbühl) 

UniBasel Contributors:  Zumbühl, Dominik M 
Item Type:  Article, refereed 
Article Subtype:  Research Article 
Publisher:  American Physical Society 
ISSN:  00319007 
eISSN:  10797114 
Note:  Publication type according to Uni Basel Research Database: Journal article 
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Last Modified:  21 Apr 2020 10:30 
Deposited On:  21 Apr 2020 10:30 
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