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Proceedings Paper

Zero spin splitting of landau levels in 2D electron systems: role of sign of lande factor
Author(s): E. E. Takhtamirov; V. A. Volkov
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Paper 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, ΔsN, 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 ΔsN is induced by the Dresselhaus mechanism if gzz < 0, or Rashba mechanism if gzz > 0. The results are qualitatively applicable to other low-dimensional systems (quantum wires and dots).

Paper Details

Date Published: 11 June 2003
PDF: 4 pages
Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); doi: 10.1117/12.513904
Show Author Affiliations
E. E. Takhtamirov, Institute of Radio Engineering and Electronics (Russia)
V. A. Volkov, Institute of Radio Engineering and Electronics (Russia)


Published in SPIE Proceedings Vol. 5023:
10th International Symposium on Nanostructures: Physics and Technology
Zhores I. Alferov; Leo Esaki, Editor(s)

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