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Positron annihilation study of the Fermi surface of Ni2MnGa

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Haynes, T. D., Watts, R. J., Laverock, J., Major, Z. s, Alam, M. A., Taylor, J. W., Duffy, J. A. and Dugdale, S. B. (2012) Positron annihilation study of the Fermi surface of Ni2MnGa. New Journal of Physics, Vol.14 (No.3). Article no. 035020. doi:10.1088/1367-2630/14/3/035020 ISSN 1367-2630.

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Official URL: http://dx.doi.org/10.1088/1367-2630/14/3/035020

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Abstract

The Fermi surface of the ferromagnetic shape-memory alloy Ni2MnGa has been determined experimentally with two-dimensional angular correlation of electron–positron annihilation radiation. Our results are supported by first principles electronic structure calculations. The measured electron occupancy within the Brillouin zone is consistent with the existence of two nesting features present in the Fermi surfaces calculated in previous studies. The nesting vectors of the calculated Fermi surface match the modulation of the pre-martensitic intermediate structure and that of the martensitic structure.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title: New Journal of Physics
Publisher: IOP Publishing
ISSN: 1367-2630
Official Date: 2012
Dates:
DateEvent
2012Published
Volume: Vol.14
Number: No.3
Page Range: Article no. 035020
DOI: 10.1088/1367-2630/14/3/035020
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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