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.

引用

页码：1 / 5

页数：5

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