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

doi:10.1063/1.4710524

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 journal › Article › peer-review

15 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 language	English (US)
Article number	182402
Journal	Applied Physics Letters
Volume	100
Issue number	18
DOIs	https://doi.org/10.1063/1.4710524
State	Published - Apr 30 2012

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4710524

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@article{e52e18ef8050416392f8bb27ab80f994,

title = "Measurement and simulation of anisotropic magnetoresistance in single GaAs/MnAs core/shell nanowires",

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.",

author = "J. Liang and J. Wang and A. Paul and Cooley, {B. J.} and Rench, {D. W.} and Dellas, {N. S.} and Mohney, {S. E.} and R. Engel-Herbert and N. Samarth",

note = "Funding Information: This work is supported by the Penn State Center for Nanoscale Science under NSF DMR-0820404, and by NSF ECCS-0609282, ONR N00014-09-1-0221, and the Penn State Nanofabrication Facility NSF NNUN ECCS-35765.",

year = "2012",

month = apr,

day = "30",

doi = "10.1063/1.4710524",

language = "English (US)",

volume = "100",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Measurement and simulation of anisotropic magnetoresistance in single GaAs/MnAs core/shell nanowires

AU - Liang, J.

AU - Wang, J.

AU - Paul, A.

AU - Cooley, B. J.

AU - Rench, D. W.

AU - Dellas, N. S.

AU - Mohney, S. E.

AU - Engel-Herbert, R.

AU - Samarth, N.

N1 - Funding Information: This work is supported by the Penn State Center for Nanoscale Science under NSF DMR-0820404, and by NSF ECCS-0609282, ONR N00014-09-1-0221, and the Penn State Nanofabrication Facility NSF NNUN ECCS-35765.

PY - 2012/4/30

Y1 - 2012/4/30

N2 - 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.

AB - 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.

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DO - 10.1063/1.4710524

M3 - Article

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SN - 0003-6951

VL - 100

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 182402

ER -

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

Abstract

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