標題: Orbital magnetic moments of oxygen and chromium in CrO2
作者: Huang, DJ
Jeng, HT
Chang, CF
Guo, GY
Chen, J
Wu, WP
Chung, SC
Shyu, SG
Wu, CC
Lin, HJ
Chen, CT
電子物理學系
Department of Electrophysics
公開日期: 1-Nov-2002
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.
URI: http://dx.doi.org/10.1103/PhysRevB.66.174440
http://hdl.handle.net/11536/28394
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.66.174440
期刊: PHYSICAL REVIEW B
Volume: 66
Issue: 17
起始頁: 0
結束頁: 0
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