Observation of Phasons in Magnetic Shape Memory Alloy Ni2MnGa

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.

References in corpus (2)

• First-principles study of lattice instabilities in the ferromagnetic martensite Ni${}_2$MnGa
• A First-Principles Investigation of Phonon Softenings and Lattice Instabilities in the Shape-Memory System Ni${}_2$MnGa

Cited by in corpus (13)

• Combined experimental and theoretical investigation of the premartensitic transition in Ni${}_2$MnGa
• Martensitic transition, ferrimagnetism and Fermi surface nesting in Mn_2NiGa
• Modulations in martensitic Heusler alloys originate from nanotwin ordering
• Premartensite to martensite transition and its implications on the origin of modulation in Ni2MnGa ferromagnetic shape memory alloy
• A high resolution synchrotron x-ray powder diffraction study of the incommensurate modulation in the martensite phase of Ni2MnGa: Evidence for nearly 7M modulation and phason broadening
• Adaptive modulation in Ni2Mn1.4In0.6 magnetic shape memory Heusler alloy
• Temperature dependence of the anomalous Nernst effect in Ni${}_2$MnGa shape memory alloy
• Structural and Magnetic Dynamics in the Magnetic Shape Memory Alloy Ni${}_2$MnGa
• Incommensurate modulations in stoichiometric Ni2MnGa ferromagnetic shape memory alloy: An overview
• Coherent phonon dynamics at the martensitic phase transition of Ni_2MnGa
• Bulk Electronic Structure of Ni2MnGa studied by Density Functional Theory and Hard X-ray Photoelectron Spectroscopy
• Coupling between a charge density wave and magnetism in an Heusler material
• Sliding phasons in Moiré Ladders