Anomalous Shubnikov-de Haas oscillations in two-dimensional systems

R. Winkler, S. J. Papadakis, E. P. De Poortere, J. P. Lu, M. Shayegan

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Shubnikov-de Haas (SdH) oscillations have long been used to measure the unequal spin-subband densities of inversion asymmetric two-dimensional (2D) systems. Our experiments and self-consistent numerical calculations for 2D GaAs hole systems indicate that, in general, these oscillations are not simply related to the population of spin-split subbands at zero-magnetic-field. The SdH oscillations depend sensitively on the crystallographic growth directions of a semiconductor quantum well. Our quantum mechanical analysis reveals the inapplicability of conventional Bohr-Sommerfeld quantization for systems with spin-orbit interaction.

Original languageEnglish (US)
Pages (from-to)13-17
Number of pages5
JournalPhysica B: Condensed Matter
Volume298
Issue number1-4
DOIs
StatePublished - Apr 1 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Keywords

  • Magneto-oscillations
  • Semiclassics
  • Spin-orbit coupling
  • Two-dimensional systems

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