2006/02/01 by S. B. Dugdale, Robyn Watts, R. J. Watts +10 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Computer science #Intermetallics and Advanced Alloy Properties #Phase-change materials and chalcogenides #Physics #Shape Memory Alloy Transformations #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.96.046406
published as Physical Review Letters, 96, 046406 (2006)
arxiv created 2006/02/01 · openalex publication_date 2006/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The Fermi surface topology of the shape-memory alloy Ni0.62Al0.38 has been determined using Compton scattering. A large area of this Fermi surface can be made to nest with other areas by translation through a vector of approximately 0.18[1,1,0](2pi/a), which corresponds to the wave vector associated with martensitic precursor phenomena such as phonon softening and diffuse streaking in electron diffraction patterns. This observation is compelling evidence that these phenomena are driven by the enhanced electron-lattice coupling due to the Fermi surface nesting.