Positron annihilation study of the Fermi surface of Ni2MnGa

Autor:	J. A. Duffy, Z Major, Jon W. Taylor, M A Alam, RJ Watts, Jude Laverock, Stephen B Dugdale, TD Haynes
Rok vydání:	2012
Předmět:	Physics Condensed matter physics Fermi level General Physics and Astronomy Quantum oscillations Fermi surface Brillouin zone Condensed Matter::Materials Science symbols.namesake Annihilation radiation symbols Condensed Matter::Strongly Correlated Electrons Fermi liquid theory Fermi gas Pseudogap
Zdroj:	New Journal of Physics. 14:035020
ISSN:	1367-2630
DOI:	10.1088/1367-2630/14/3/035020
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aaa9d28184761d48443db4a102664104 https://doi.org/10.1088/1367-2630/14/3/035020 Zobrazit plný text záznamu