Evidence for temperature dependent moments ordering in ferromagnetic NiMnSb(100) -: art. no. 052409

被引:60
作者
Borca, CN [1 ]
Komesu, T
Jeong, HK
Dowben, PA
Ristoiu, D
Hordequin, C
Nozières, JP
Pierre, J
Stadler, S
Idzerda, YU
机构
[1] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA
[2] Univ Nebraska, Mat Res & Analy Ctr, Behlen Lab Phys, Lincoln, NE 68588 USA
[3] CNRS, Lab Louis Neel, F-38042 Grenoble 09, France
[4] USN, Res Lab, Mat Phys Branch, Washington, DC 20375 USA
来源
PHYSICAL REVIEW B | 2001年 / 64卷 / 05期
关键词
D O I
10.1103/PhysRevB.64.052409
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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 (similar to 730 K). While the spin polarization near the Fermi level, from spin-polarized inverse photoemission, remains very high for k(parallel to) = 0, it is unlikely that NiMnSb is a half-metallic ferromagnet near room temperature.
引用
收藏
页码:0524091 / 0524094
页数:4
相关论文
共 33 条
[31]   NEW PROBE FOR THE GROUND-STATE ELECTRONIC-STRUCTURE OF NARROW-BAND AND IMPURITY SYSTEMS [J].
THOLE, BT ;
COWAN, RD ;
SAWATZKY, GA ;
FINK, J ;
FUGGLE, JC .
PHYSICAL REVIEW B, 1985, 31 (10) :6856-6858
[32]   ELECTRONIC-STRUCTURE OF THE CHROMIUM DIOXIDE (001) SURFACE [J].
VANLEUKEN, H ;
DEGROOT, RA .
PHYSICAL REVIEW B, 1995, 51 (11) :7176-7178
[33]  
WEISENDANGER R, 1990, PHYS REV LETT, V65, P247