Comparison of free surface polarization of NiMnSb and Co2 MnSi

Y. Miyoshi; Y. Bugoslavsky; M. H. Syed; T. Robinson; L. F. Cohen; L. J. Singh; Z. H. Barber; C. E.A. Grigorescu; S. Gardelis; J. Giapintzakis; W. Van Roy

doi:10.1063/1.2193787

Comparison of free surface polarization of NiMnSb and Co₂ MnSi

Y. Miyoshi^*, Y. Bugoslavsky, M. H. Syed, T. Robinson, L. F. Cohen, L. J. Singh, Z. H. Barber, C. E.A. Grigorescu, S. Gardelis, J. Giapintzakis, W. Van Roy

^*Corresponding author for this work

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We present a systematic study of the polarization of the transport current from a variety of NiMnSb and Co₂ MnSi thin films and bulk material using point contact Andreev reflection spectroscopy. The simple analysis suggests that the free surface polarization of NiMnSb is within error 10% lower than that of Co₂ MnSi. In either material the measured polarization is rather insensitive to key physical and material properties. We use a two channel model to rule out the influence that stray magnetic field from the ferromagnet might have on the measurements presented.

Original language	English
Article number	142512
Journal	Applied Physics Letters
Volume	88
Issue number	14
DOIs	https://doi.org/10.1063/1.2193787
Publication status	Published - 7 Apr 2006

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title = "Comparison of free surface polarization of NiMnSb and Co2 MnSi",

abstract = "We present a systematic study of the polarization of the transport current from a variety of NiMnSb and Co2 MnSi thin films and bulk material using point contact Andreev reflection spectroscopy. The simple analysis suggests that the free surface polarization of NiMnSb is within error 10% lower than that of Co2 MnSi. In either material the measured polarization is rather insensitive to key physical and material properties. We use a two channel model to rule out the influence that stray magnetic field from the ferromagnet might have on the measurements presented.",

author = "Y. Miyoshi and Y. Bugoslavsky and Syed, {M. H.} and T. Robinson and Cohen, {L. F.} and Singh, {L. J.} and Barber, {Z. H.} and Grigorescu, {C. E.A.} and S. Gardelis and J. Giapintzakis and {Van Roy}, W.",

note = "Funding Information: The authors would like to thank the EPSRC GR/T03802 for funding this program of work.",

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day = "7",

doi = "10.1063/1.2193787",

language = "English",

volume = "88",

journal = "Applied Physics Letters",

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T1 - Comparison of free surface polarization of NiMnSb and Co2 MnSi

AU - Miyoshi, Y.

AU - Bugoslavsky, Y.

AU - Syed, M. H.

AU - Robinson, T.

AU - Cohen, L. F.

AU - Singh, L. J.

AU - Barber, Z. H.

AU - Grigorescu, C. E.A.

AU - Gardelis, S.

AU - Giapintzakis, J.

AU - Van Roy, W.

N1 - Funding Information: The authors would like to thank the EPSRC GR/T03802 for funding this program of work.

PY - 2006/4/7

Y1 - 2006/4/7

N2 - We present a systematic study of the polarization of the transport current from a variety of NiMnSb and Co2 MnSi thin films and bulk material using point contact Andreev reflection spectroscopy. The simple analysis suggests that the free surface polarization of NiMnSb is within error 10% lower than that of Co2 MnSi. In either material the measured polarization is rather insensitive to key physical and material properties. We use a two channel model to rule out the influence that stray magnetic field from the ferromagnet might have on the measurements presented.

AB - We present a systematic study of the polarization of the transport current from a variety of NiMnSb and Co2 MnSi thin films and bulk material using point contact Andreev reflection spectroscopy. The simple analysis suggests that the free surface polarization of NiMnSb is within error 10% lower than that of Co2 MnSi. In either material the measured polarization is rather insensitive to key physical and material properties. We use a two channel model to rule out the influence that stray magnetic field from the ferromagnet might have on the measurements presented.

UR - http://www.scopus.com/inward/record.url?scp=33646674490&partnerID=8YFLogxK

U2 - 10.1063/1.2193787

DO - 10.1063/1.2193787

M3 - Article

AN - SCOPUS:33646674490

SN - 0003-6951

VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 142512

ER -

Comparison of free surface polarization of NiMnSb and Co₂ MnSi

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