Observation of phasons in the magnetic shape memory alloy Ni2MnGa

被引：35
|
作者：
Shapiro, S. M.
Vorderwisch, P.
Habicht, K.
Hradil, K.
Schneider, H.
机构：
[1] Brookhaven Natl Lab, Upton, NY 11973 USA
[2] Hahn Meitner Inst Berlin GmbH, Berlin, Germany
[3] Univ Gottingen, D-3400 Gottingen, Germany
来源：
EPL | 2007年 / 77卷 / 05期
关键词：
D O I：
10.1209/0295-5075/77/56004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An inelastic neutron scattering study of the lattice dynamics of the martensite phase of the ferromagnetic shape memory alloy, Ni2MnGa, reveals the presence of well-defined phasons associated with the charge density wave (CDW) resulting from Fermi surface (FS) nesting. The velocity and the temperature dependence of the phason are measured as well as the anomalous [110]-TA(2) phonon. Copyright (c) EPLA, 2007.
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