Research Papers in Physics and Astronomy
Date of this Version
July 2001
Abstract
From magnetic circular dichroism measurements of the Heusler alloy NiMnSb, in combination with other techniques, we show that a dramatic increase in the Mn and Ni moments occurs below a ‘‘crossover’’ transition temperature of about 80–100 K. This phase transition is well below the Curie temperature of NiMnSb (~730 K). While the spin polarization near the Fermi level, from spin-polarized inverse photoemission, remains very high for kII50, it is unlikely that NiMnSb is a half-metallic ferromagnet near room temperature.
Comments
Published Applied Physics Letters 79 (2001) 3122-3124. Permission to use.