| Issue |
EPL
Volume 77, Number 5, March 2007
|
|
|---|---|---|
| Article Number | 56004 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/77/56004 | |
| Published online | 26 February 2007 | |
Observation of phasons in the magnetic shape memory alloy 
1
Brookhaven National Laboratory - PO Box 5000, Upton, NY
2
Hahn-Meitner Institut - Berlin, Germany
3
Georg-August-Universität - Göttingen, Germany
Received:
9
November
2006
Accepted:
17
January
2007
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.
PACS: 61.12.-q – Neutron diffraction and scattering / 71.45.Lr – Charge-density-wave systems / 81.30.Kf – Martensitic transformations
© Europhysics Letters Association, 2007
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