Effective mass suppression in interacting, fully spin-polarized 2D electron systems in narrow AlAs quantum wells

ORAL

Abstract

Similar to the study described by M. Padmanabhan et al. (previous abstract), we perform effective mass measurements in a two-dimensional electron system (2DES) confined to a narrow (45{\AA}-wide) AlAs quantum well. In contrast to the 2DESs confined to wide AlAs quantum wells, in this system the electrons occupy a single out-of-plane valley with an isotropic in-plane Fermi contour. We confirm that the effective mass for the fully spin-polarized 2DES is suppressed compared to the partially spin-polarized value.

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Authors

  • Tayfun Gokmen

    • Department of Electrical Engineering, Princeton University

  • Medini Padmanabhan

    • Department of Electrical Engineering, Princeton University

  • K. Vakili

    • Department of Electrical Engineering, Princeton University

  • M. Shayegan

    • Department of Electrical Engineering, Princeton University