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