Spin-injection through an Fe/InAs interface

M. Zwierzycki; K. Xia; Paul J. Kelly; G.E.W. Bauer; I. Turek

doi:10.1002/pssa.200306344

Spin-injection through an Fe/InAs interface

M. Zwierzycki^*, K. Xia, Paul J. Kelly, G.E.W. Bauer, I. Turek

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

The spin-dependence of the interface resistance between ferromagnetic Fe and InAs is calculated from first-principles for specular and disordered (001) interfaces. Because of the symmetry mismatch in the minority-spin channel, the specular interface acts as an efficient spin filter with a transmitted current polarisation between 98 an 89%. The resistance of a specular interface in the diffusive regime is comparable to the resistance of a few microns of bulk InAs. Symmetry-breaking arising from interface disorder reduces the spin asymmetry substantially and we conclude that efficient spin injection from Fe into InAs can only be realized using high quality epitaxial interfaces.

Original language	English
Pages (from-to)	25-28
Number of pages	4
Journal	Physica status solidi A
Volume	196
Issue number	1
DOIs	https://doi.org/10.1002/pssa.200306344
Publication status	Published - 2003

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METIS-212377

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10.1002/pssa.200306344

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title = "Spin-injection through an Fe/InAs interface",

abstract = "The spin-dependence of the interface resistance between ferromagnetic Fe and InAs is calculated from first-principles for specular and disordered (001) interfaces. Because of the symmetry mismatch in the minority-spin channel, the specular interface acts as an efficient spin filter with a transmitted current polarisation between 98 an 89%. The resistance of a specular interface in the diffusive regime is comparable to the resistance of a few microns of bulk InAs. Symmetry-breaking arising from interface disorder reduces the spin asymmetry substantially and we conclude that efficient spin injection from Fe into InAs can only be realized using high quality epitaxial interfaces.",

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author = "M. Zwierzycki and K. Xia and Kelly, {Paul J.} and G.E.W. Bauer and I. Turek",

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T1 - Spin-injection through an Fe/InAs interface

AU - Zwierzycki, M.

AU - Xia, K.

AU - Kelly, Paul J.

AU - Bauer, G.E.W.

AU - Turek, I.

PY - 2003

Y1 - 2003

N2 - The spin-dependence of the interface resistance between ferromagnetic Fe and InAs is calculated from first-principles for specular and disordered (001) interfaces. Because of the symmetry mismatch in the minority-spin channel, the specular interface acts as an efficient spin filter with a transmitted current polarisation between 98 an 89%. The resistance of a specular interface in the diffusive regime is comparable to the resistance of a few microns of bulk InAs. Symmetry-breaking arising from interface disorder reduces the spin asymmetry substantially and we conclude that efficient spin injection from Fe into InAs can only be realized using high quality epitaxial interfaces.

AB - The spin-dependence of the interface resistance between ferromagnetic Fe and InAs is calculated from first-principles for specular and disordered (001) interfaces. Because of the symmetry mismatch in the minority-spin channel, the specular interface acts as an efficient spin filter with a transmitted current polarisation between 98 an 89%. The resistance of a specular interface in the diffusive regime is comparable to the resistance of a few microns of bulk InAs. Symmetry-breaking arising from interface disorder reduces the spin asymmetry substantially and we conclude that efficient spin injection from Fe into InAs can only be realized using high quality epitaxial interfaces.

KW - METIS-212377

U2 - 10.1002/pssa.200306344

DO - 10.1002/pssa.200306344

M3 - Article

SN - 1862-6300

VL - 196

SP - 25

EP - 28

JO - Physica status solidi A

JF - Physica status solidi A

IS - 1

ER -

Spin-injection through an Fe/InAs interface

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