Evidence for temperature dependent moments ordering in ferromagnetic NiMnSb(100)

Authors

C. N. Borca, University of Nebraska–Lincoln
Takashi Komesu, University of Nebraska–Lincoln
Hae Kyung Jeong, University of Nebraska–Lincoln
P. A. Dowben, University of Nebraska–Lincoln
Delia Ristoiu, Institut NÉEL
Ch Hordequin, Institut NÉEL
J. P. Nozières, Institut NÉEL
J. Pierre, Institut NÉEL
Shane Stadler, Naval Research Laboratory
Y. U. Idzerda, Naval Research Laboratory

Document Type

Article

Publication Date

8-1-2001

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 k=0, it is unlikely that NiMnSb is a half-metallic ferromagnet near room temperature.

Publication Source (Journal or Book title)

Physical Review B - Condensed Matter and Materials Physics

First Page

0524091

Last Page

0524094

Recommended Citation

Borca, C., Komesu, T., Jeong, H., Dowben, P., Ristoiu, D., Hordequin, C., Nozières, J., Pierre, J., Stadler, S., & Idzerda, Y. (2001). Evidence for temperature dependent moments ordering in ferromagnetic NiMnSb(100). Physical Review B - Condensed Matter and Materials Physics, 64 (5), 0524091-0524094. https://doi.org/10.1103/PhysRevB.64.052409