Tuesday, October 23, 2012

1210.5816 (S. Skaftouros et al.)

Generalized Slater-Pauling rule for the inverse Heusler compounds    [PDF]

S. Skaftouros, K. Ozdogan, E. Sasioglu, I. Galanakis
We present extensive first-principles calculations on the inverse full-Heusler compounds having the chemical formula X$_2$YZ where (X = Sc, Ti, V, Cr or Mn), (Z = Al, Si or As) and the Y ranges from Ti to Zn. Several of these alloys are identified to be half-metallic magnets. We show that the appearance of half-metallicity is associated in all cases to a Slater-Pauling behavior of the total spin-magnetic moment. There are three different variants of this rule for the inverse Heusler alloys depending on the chemical type of the constituent transition-metal atoms. Simple arguments regarding the hybridization of the d-orbitals of neighboring atoms can explain these rules. We expect our results to trigger further experimental interest on this type of half-metallic Heusler compounds.
View original: http://arxiv.org/abs/1210.5816

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