Dependence of effective mass on spin and valley degrees of freedom

T. Gokmen, Medini Padmanabhan, M. Shayegan

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We measure the effective mass (m*) of interacting two-dimensional electrons confined to an AlAs quantum well while we change the conduction-band valley occupation and the spin polarization via the application of strain and magnetic field, respectively. Compared to its band value, m* is enhanced unless the electrons are fully valley- and spin-polarized. Incidentally, in the fully spin- and valley-polarized regime, the electron system exhibits an insulating behavior.

Original languageEnglish (US)
Article number146405
JournalPhysical review letters
Volume101
Issue number14
DOIs
StatePublished - Oct 2 2008

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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