The polarization of Sb overlayers on NiMnSb(100)

Authors

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

Document Type

Article

Publication Date

8-28-2000

Abstract

We have investigated the induced polarization of paramagnetic Sb overlayers on the Heusler alloy NiMnSb. From combined X-ray absorption spectroscopy (XAS) and spin-polarized inverse photoemission spectroscopy (SPIPES), we can assign some of the unoccupied states of the Heusler alloy NiMnSb. With increasing thickness of the Sb overlayer, there is a decline in the density of states near the Fermi energy, as expected for a semimetal overlayer on a metallic substrate. While the Sb is polarized by the ferromagnetic NiMnSb substrate, consistent with the expectations of mean field theory, the polarization at the center of the surface/overlayer Brillouin zone cannot be easily related to the induced magnetization. (C) 2000 Elsevier Science B.V.

Publication Source (Journal or Book title)

Physics Letters, Section A: General, Atomic and Solid State Physics

First Page

245

Last Page

251

Recommended Citation

Komesu, T., Borca, C., Jeong, H., Dowben, P., Ristoiu, D., Nozières, J., Stadler, S., & Idzerda, Y. (2000). The polarization of Sb overlayers on NiMnSb(100). Physics Letters, Section A: General, Atomic and Solid State Physics, 273 (4), 245-251. https://doi.org/10.1016/S0375-9601(00)00490-4