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Spin splitting in GaAs (100) two-dimensional holes.

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Habib, B. [Princeton University] Tutuc, E. [Princeton University] Melinte, Sorin [UCL] Shayegan, M. [Princeton University] Wasserman, D. [Princeton University] Winkler, R. [Universität Hannover]

We measured Shubnikov–de Haas (SdH) oscillations in GaAs ~100! two-dimensional holes to determine the inversion asymmetry-induced spin splitting. The Fourier spectrum of the SdH oscillations contains two peaks, at frequencies f2 and f1 , that correspond to the hole densities of the two spin subbands and a peak, at frequency f tot , corresponding to the total hole density. In addition, the spectrum exhibits an anomalous peak at f tot/2. We also determined the effective masses of the two spin subbands by finding the inverse transform of the Fourier spectrum in the vicinity of f2 and f1 , and then analyzing the temperature dependence of the SdH oscillations for each subband. We discuss our results in light of self-consistent calculations and previous experiments.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2004
Language Anglais
Journal information "Physical Review B, Condensed matter and materials physics" - Vol. 69, p. 113311(4) (2004)
Peer reviewed yes
Publisher The American Physical Society ((United States))
issn 1098-0121
e-issn 1550-235X
Publication status Publié
Affiliation UCL - FSA/ELEC - Département d'électricité
Links
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Bibliographic reference Habib, B. ; Tutuc, E. ; Melinte, Sorin ; Shayegan, M. ; Wasserman, D. ; et. al. Spin splitting in GaAs (100) two-dimensional holes.. In: Physical Review B, Condensed matter and materials physics, Vol. 69, p. 113311(4) (2004)
Permanent URL http://hdl.handle.net/2078.1/117326