6533b7dbfe1ef96bd1270876
RESEARCH PRODUCT
Disentangling the Mn moments on different sublattices in the half-metallic ferrimagnet Mn3−xCoxGa
Benjamin BalkeClaudia FelserH. J. ElmersP. KlaerVajiheh AlijaniJürgen WinterlikCraig Jenkinssubject
Physics and Astronomy (miscellaneous)Magnetic momentSpin polarizationCondensed matter physicsChemistryMagnetic circular dichroismFermi levelCondensed Matter::Materials ScienceMagnetizationTetragonal crystal systemsymbols.namesakeFerrimagnetismFormula unitsymbolsCondensed Matter::Strongly Correlated Electronsdescription
Ferrimagnetic Mn3−xCoxGa compounds have been investigated by magnetic circular dichroism in x-ray absorption (XMCD). Compounds with x>0.5 crystallize in the CuHg2Ti structure. A tetragonal distortion of the cubic structure occurs for x≤0.5. For the cubic phase, magnetometry reveals a linearly increasing magnetization of 2x Bohr magnetons per formula unit obeying the generalized Slater–Pauling rule. XMCD confirms the ferrimagnetic character with Mn atoms occupying two different sublattices with antiparallel spin orientation and different degrees of spin localization and identifies the region 0.6<x≤0.8 as most promising for a high spin polarization at the Fermi level. Individual Mn moments on inequivalent sites are compared to theoretical predictions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-05-23 | Applied Physics Letters |