A critical discussion of calculated modulated structures, Fermi surface nesting and phonon softening in magnetic shape memory alloys Ni${}_2$Mn(Ga, Ge, Al) and Co${}_2$Mn(Ga, Ge)

A. T. Zayak, P. Entel

A series of first principles calculations have been carried out in order to discuss electronic structure, phonon dynamics, structural instabilities and the nature of martensitic tr…