Zero spin splitting of landau levels in 2D electron systems: role of sign of lande factor

E. E. Takhtamirov; V. A. Volkov

doi:10.1117/12.513904

11 June 2003 Zero spin splitting of Landau levels in 2D electron systems: role of sign of Lande factor

E. E. Takhtamirov, V. A. Volkov

Proceedings Volume 5023, 10th International Symposium on Nanostructures: Physics and Technology; (2003) https://doi.org/10.1117/12.513904
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

The one-particle spin splitting of Landau levels in 2D electron systems is governed both by Zeeman mechanism and spin-orbit interaction. For III-V heterostructures the latter has two contributions: bulk (Dresselhaus contribution) and interface (Rashba contribution). It is analyzed the combined effect of all three mechanisms on the spectrum of Landau levels in a quantum well (001) III-V in perpendicular to plane or near to perpendicular magnetic field. The goal of the work is to find conditions when the bare spin splitting, Δ_sN, of Nth Landau level disappears. It is shown that (1) the Rashba and Dresselhaus mechanisms are not equivalent to each other; (2) the result depends on the sign of the Lande effective g-factor. Zero of Δ_sN is induced by the Dresselhaus mechanism if g_zz < 0, or Rashba mechanism if g_zz > 0. The results are qualitatively applicable to other low-dimensional systems (quantum wires and dots).

Citation Download Citation

E. E. Takhtamirov and V. A. Volkov "Zero spin splitting of Landau levels in 2D electron systems: role of sign of Lande factor", Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); https://doi.org/10.1117/12.513904

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