Measurement and simulation of anisotropic magnetoresistance in single GaAs/MnAs core/shell nanowires

J. Liang, J. Wang, A. Paul, B. J. Cooley, D. W. Rench, N. S. Dellas, S. E. Mohney, R. Engel-Herbert, N. Samarth

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We report four probe measurements of the low field magnetoresistance (MR) in single core/shell GaAs/MnAs nanowires (NWs) synthesized by molecular beam epitaxy, demonstrating clear signatures of anisotropic magnetoresistance that track the field-dependent magnetization. A comparison with micromagnetic simulations reveals that the principal characteristics of the magnetoresistance data can be unambiguously attributed to the nanowire segments with a zinc blende GaAs core. The direct correlation between magnetoresistance, magnetization, and crystal structure provides a powerful means of characterizing individual hybrid ferromagnet/semiconductor nanostructures.

Original languageEnglish (US)
Article number182402
JournalApplied Physics Letters
Volume100
Issue number18
DOIs
StatePublished - Apr 30 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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