Magnetism in tetragonal manganese-rich Heusler compounds

Wollmann L, Chadov S, Kuebler J, Felser C (2015)

Publication Type: Journal article

Publication year: 2015

Journal

Physical Review B - Condensed Matter and Materials Physics American Physical Society (APS)

Book Volume: 92

Article Number: 064417

Journal Issue: 6

DOI: 10.1103/PhysRevB.92.064417

Abstract

A comprehensive study of the total energy of manganese-rich Heusler compounds using density functional theory is presented. Starting from a large set of cubic parent systems, the response to tetragonal distortions is studied in detail. We single out the systems that remain cubic from those that most likely become tetragonal. The driving force of the tetragonal distortion and its effect on the magnetic properties, especially where they deviate from the Slater-Pauling rule, as well as the trends in the Curie temperatures, are highlighted. By means of partial densities of states, the electronic structural changes reveal the microscopic origin of the observed trends. We focus our attention on the magnetocrystalline anisotropy and find astonishingly high values for tetragonal Heusler compounds containing heavy transition metals accompanied by low magnetic moments, which indicates that these materials are promising candidates for spin-transfer-torque magnetization-switching applications.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Technische Universität Darmstadt DE Germany (DE)

How to cite

APA:

Wollmann, L., Chadov, S., Kuebler, J., & Felser, C. (2015). Magnetism in tetragonal manganese-rich Heusler compounds. Physical Review B - Condensed Matter and Materials Physics, 92(6). https://doi.org/10.1103/PhysRevB.92.064417

MLA:

Wollmann, Lukas, et al. "Magnetism in tetragonal manganese-rich Heusler compounds." Physical Review B - Condensed Matter and Materials Physics 92.6 (2015).

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