Vol. 10, no.3, 2018
РусскийEnglish
SPINTRONICS
EFFECTIVE SPIN-ORBIT INTERACTION IN NARROW QUANTUM WELLS
Zhanna A. Devizorova, Vladimir A. Volkov
Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, http://cplire.ru/
Moscow 125009, Russian Federationn
Received 08 October 2018
Abstract. Rashba and linear Dresselhaus interactions are believed to yield dominant contribution to the spin splitting of two-dimensional electrons in the quantum wells based on A3B5 compounds. We show that the interfacial spin-orbit interaction significantly renormalizes the value of the corresponding Rashba (αSIA) and Dresselhaus (αBIA) parameters. For this purpose, we solve the effective mass equation in a quantum well supplemented by the original boundary conditions on the atomically sharp interfaces and calculate the interfacial contributions to αSIA and αBIA. Our results explain a considerable spread in the experimental data on spin-orbit parameters in GaAs/AlGaAs quantum wells. We also demonstrated that the non-equivalence of the interfaces leads to the anisotropy of the spin splitting even in quantum wells with zero average electric field.
Keywords: quantum wells, spin splitting of two-dimensional electrons, spin-orbit interactions, interfacial terms
PACS: 71.22.+i, 71.70.Ej, 73.21.Fg, 73.20.-r, 73.21.-b
RENSIT, 2018, 10(3):357-362 DOI: 10.17725/rensit.2018.10.357
Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/260/10(3)357-362e.pdf