Orbital magnetic moments of oxygen and chromium in CrO2 -: art. no. 174440

被引：33
|
作者：
Huang, DJ [1 ]
Jeng, HT
Chang, CF
Guo, GY
Chen, J
Wu, WP
Chung, SC
Shyu, SG
Wu, CC
Lin, HJ
Chen, CT
机构：
[1] Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan
[2] Natl Ctr Theoret Phys, Div Phys, Hsinchu 300, Taiwan
[3] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan
[4] Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan
[5] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan
[6] Acad Sinica, Inst Chem, Taipei 115, Taiwan
[7] Natl Cent Univ, Dept Chem, Tao Yuan 320, Taiwan
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.66.174440
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
With measurements of the magnetic circular dichroism and band-structure calculations in the local spin density approximation (LSDA+U) approach, we revealed that the orbital moment of O in CrO2 is ferromagnetically coupled to that of Cr, whereas the spin moment of O is antiferromagnetically coupled to that of Cr. Spin and orbital magnetic moments of Cr and O are enhanced as Coulomb interaction energy U increases. Comparing the magnetic circular diachromism data with the LSDA+U calculations, we conclude that it is essential to include the on-site Coulomb energy for adequately describing the orbital magnetic moments of CrO2.
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页码：1 / 5
页数：5
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