Shapiro, S. M., Vorderwisch, P., Habicht, K., Hradil, K., & Schneider, H. (2007). Observation of phasons in the magnetic shape memory alloy Ni₂MnGa. European Physical Society Letters, 77(5), 56004. https://doi.org/10.1209/0295-5075/77/56004
General Physics and Astronomy; 61.05.F- Neutron diffraction and scattering 81.30.Kf Martensitic transformations 71.45.Lr Charge-density-wave systems
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Abstract:
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]-TA2 phonon.
