Electronic structure and magnetic exchange coupling in ferromagnetic full Heusler alloys

By Y. Kurtulus, Richard Dronskowski, G. Samolyuk, V. Antropov. 2004

144 citations recorded by the source corpus.

Density-functional studies of the electronic structures and exchange interaction parameters have been performed for a series of ferromagnetic full Heusler alloys of general formula ${\mathrm{Co}}_{2}\mathrm{Mn}Z$ $(Z=\mathrm{Ga},\mathrm{Si},\mathrm{Ge},\mathrm{Sn})$, ${\mathrm{Rh}}_{2}\mathrm{Mn}Z$ $(Z=\mathrm{Ge},\mathrm{Sn},\mathrm{Pb})$, ${\mathrm{Ni}}_{2}\mathrm{Mn}\mathrm{Sn}$, ${\mathrm{Cu}}_{2}\mathrm{Mn}\mathrm{Sn}$, and ${\mathrm{Pd}}_{2}\mathrm{Mn}\mathrm{Sn}$, and the connection between the electronic spectra and the magnetic interactions have been studied. Different mechanisms contributing to the exchange coupling are revealed. The band dependence of the exchange parameters, their dependence on volume and valence electron concentration have been thoroughly analyzed within the Green function technique. The difference between the exact adiabatic approach and the long-wavelength approximation is discussed.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/80e9e1fe8d34cb5f471c79764d9678f7e16320ad

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In Electrical and Electronic Engineering

In Electronic, Optical and Magnetic Materials

In Materials Chemistry

Citations in the corpus

Half-metallic ferromagnets: From band structure to many-body effects (2007, background): “This already gives 70% of the total contribution to J and is about ten times larger than the Co-Co and Mn-Mn interactions (Kurtulus et al., 2005).”