Spin splitting of electron states in lattice-mismatched (110)-oriented quantum wells

2016/05/28 by M. O. Nestoklon, S. A. Tarasenko, R. Benchamekh +1
Physics and Astronomy · #Condensed matter physics #Electron #Energy level splitting #Lattice (music) #Lattice constant #Magnetic properties of thin films #Physics #Quantum and electron transport phenomena #Quantum mechanics #Quantum well #Semiconductor Quantum Structures and Devices #Spin (aerodynamics) #Spin polarization #Zero field splitting #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.94.115310

published as Phys. Rev. B 94, 115310 (2016) · 6 pages, 2 figures

arxiv created 2016/05/28 · openalex publication_date 2016/09/27 · arxiv updated 2016/10/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We show that for lattice-mismatched zinc-blende-type (110)-grown quantum wells a significant contribution to the zero-magnetic-field spin splitting of electron subbands comes from strain-induced spin-orbit coupling. Combining the envelope function theory and atomistic tight-binding approach, we calculate spin-orbit splitting constants for realistic quantum wells. It is found that the strain due to lattice mismatch in conventional GaAs/AlGaAs structures may noticeably modify the spin splitting while in InGaAs/GaAs structures it plays a major role and may even change the sign of the spin splitting constant.

Citations

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