Influence of Ni doping on the electronic structure of Ni_2MnGa

Abstract

The modifications in the electronic structure of Ni_{2+x}Mn_{1-x}Ga by Ni doping have been studied using full potential linearized augmented plane wave method and ultra-violet photoemission spectroscopy. Ni 3d related electron states appear due to formation of Ni clusters. We show the possibility of changing the minority-spin DOS with Ni doping, while the majority-spin DOS remains almost unchanged. The total magnetic moment decreases with excess Ni. The total energy calculations corroborate the experimentally reported changes in the Curie temperature and the martensitic transition temperature with x.

arXiv comment4 pages, 4 figures, accepted in Phys. Rev. B

References in corpus (4)

• Coexistence of ferro- and antiferromagnetic order in Mn-doped Ni${}_2$MnGa
• First-principles study of lattice instabilities in the ferromagnetic martensite Ni${}_2$MnGa
• Large negative magnetoresistance in a ferromagnetic shape memory alloy : Ni_{2+x}Mn_{1-x}Ga
• First-principles calculations of spin spirals in Ni2MnGa and Ni2MnAl

Cited by in corpus (10)

• Theoretical prediction and experimental study of a ferromagnetic shape memory alloy: Ga_2MnNi
• Martensitic transition, ferrimagnetism and Fermi surface nesting in Mn_2NiGa
• Magnetoresistance behavior of a ferromagnetic shape memory alloy: Ni_1.75Mn_1.25Ga
• Ab initio Studies on Electronic and Magnetic Properties of X${}_2$PtGa (X = Cr, Mn, Fe, Co) Heusler Alloys
• Magnetic properties and electronic structure of Mn-Ni-Ga magnetic shape memory alloys
• Interface-driven unusual anomalous Hall effect in MnxGa/Pt bilayers: No correlation with chiral spin structures
• Ab initio Study of Effect of Co Substitution on the Magnetic Properties of Ni and Pt-based Heusler Alloys
• Bulk Electronic Structure of Ni2MnGa studied by Density Functional Theory and Hard X-ray Photoelectron Spectroscopy
• Investigation of the structural, electronic, transport and magnetic properties of Co${}_2$FeGa Heusler alloy nanoparticles
• Modification of electronic structure and morphology of Ni2MnGa(100) by Cr adlayers