Spin-dependent transport in a magnetic two-dimensional electron gas

I. P. Smorchkova, J. M. Kikkawa, N. Samarth, D. D. Awschalom

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Magneto-transport and magneto-optical probes are used to interrogate spin-dependent transport in magnetic heterostructures wherein a two dimensional electron gas (2DEG) is exchange-coupled to local moments. At low temperatures, the significant s-d exchange-enhanced spin splitting in these "magnetic" 2DEGs is responsible for the observation of unusual transport properties such as a complete spin polarization of the gas at large Landau level filling factors and a pronounced, non-monotonic background magneto-resistance. Magneto-transport measurements of gated samples performed in a parallel field geometry are used to systematically study the variation of the magneto-resistance with sheet concentration, yielding new insights into the dependence of spin transport on the Fermi energy of the majority spin carriers.

Original languageEnglish (US)
Pages (from-to)381-387
Number of pages7
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1-4
StatePublished - Jul 15 1998

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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