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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
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Official URL: http://dx.doi.org/10.1103/PhysRevB.85.060403
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 > 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: |
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| Date of first compliant deposit: | 19 December 2015 | ||||
| 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 | ||||
| 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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