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Cubic MnSb : epitaxial growth of a predicted room temperature half-metal

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Aldous, James D., Burrows, Christopher W., Sánchez, Ana M., Beanland, R., Maskery, I. (Ian), Bradley, M. K. (Matthew K.), Dias, Manuel dos Santos, Staunton, Julie B. and Bell, Gavin R. (2012) Cubic MnSb : epitaxial growth of a predicted room temperature half-metal. Physical Review B, Vol.85 (No.6). Article no. 060403(R). doi:10.1103/PhysRevB.85.060403 ISSN 1098-0121.

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Official URL: http://dx.doi.org/10.1103/PhysRevB.85.060403

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Abstract

Epitaxial films including bulklike cubic and wurtzite polymorphs of MnSb have been grown by molecular beam epitaxy on GaAs via careful control of the Sb4/Mn flux ratio. Nonzero-temperature density functional theory was used to predict ab initio the half-metallicity of the cubic polymorph and compare its spin polarization as a function of reduced magnetization with that of the well known half-metal NiMnSb. In both cases, half-metallicity is lost at a threshold magnetization reduction, corresponding to a temperature T*<TC. This threshold is far higher for cubic MnSb compared to NiMnSb and corresponds to T*>350 K, making epitaxial cubic MnSb a promising candidate for efficient room temperature spin injection into semiconductors.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Epitaxy, Thin films, Semiconductors
Journal or Publication Title: Physical Review B
Publisher: American Physical Society
ISSN: 1098-0121
Official Date: 14 February 2012
Dates:
DateEvent
14 February 2012Published
Volume: Vol.85
Number: No.6
Page Range: Article no. 060403(R)
DOI: 10.1103/PhysRevB.85.060403
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 19 December 2015
Date of first compliant Open Access: 19 December 2015
Funder: Engineering and Physical Sciences Research Council (EPSRC), Royal Society (Great Britain), Birmingham Science City, Advantage West Midlands (AWM), European Regional Development Fund (ERDF), Fundação para a Ciência e a Tecnologia (FCT)
Grant number: SFRH/BD/35738/2007 (FCT)

Data sourced from Thomson Reuters' Web of Knowledge

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