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
收藏
页码：1 / 5
页数：5
相关论文
共 29 条
  • [1] SUM-RULES FOR POLARIZATION-DEPENDENT X-RAY-ABSORPTION
    ANKUDINOV, A
    REHR, JJ
    [J]. PHYSICAL REVIEW B, 1995, 51 (02): : 1282 - 1285
  • [2] POLARIZATION DEPENDENCE OF MAGNETIC-X-RAY SCATTERING
    BLUME, M
    GIBBS, D
    [J]. PHYSICAL REVIEW B, 1988, 37 (04): : 1779 - 1789
  • [3] X-RAY CIRCULAR-DICHROISM AND LOCAL MAGNETIC-FIELDS
    CARRA, P
    THOLE, BT
    ALTARELLI, M
    WANG, XD
    [J]. PHYSICAL REVIEW LETTERS, 1993, 70 (05) : 694 - 697
  • [4] EXPERIMENTAL CONFIRMATION OF THE X-RAY MAGNETIC CIRCULAR-DICHROISM SUM-RULES FOR IRON AND COBALT
    CHEN, CT
    IDZERDA, YU
    LIN, HJ
    SMITH, NV
    MEIGS, G
    CHABAN, E
    HO, GH
    PELLEGRIN, E
    SETTE, F
    [J]. PHYSICAL REVIEW LETTERS, 1995, 75 (01) : 152 - 155
  • [5] Performance of an elliptically polarized undulator beamline
    Chung, SC
    Chen, J
    Huang, LR
    Wu, RT
    Chen, CC
    Cheng, NF
    Chuang, JM
    Tseng, PC
    Huang, DJ
    Chang, CF
    Perng, SY
    Chen, CT
    Tsang, KL
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2001, 467 : 445 - 448
  • [6] NEW CLASS OF MATERIALS - HALF-METALLIC FERROMAGNETS
    DEGROOT, RA
    MUELLER, FM
    VANENGEN, PG
    BUSCHOW, KHJ
    [J]. PHYSICAL REVIEW LETTERS, 1983, 50 (25) : 2024 - 2027
  • [7] Observation of orbital moment in NiO
    Fernandez, V
    Vettier, C
    de Bergevin, F
    Giles, C
    Neubeck, W
    [J]. PHYSICAL REVIEW B, 1998, 57 (13): : 7870 - 7876
  • [8] Interpretation of x-ray circular dichroism: Multiple-scattering theory approach
    Guo, GY
    [J]. PHYSICAL REVIEW B, 1998, 57 (17): : 10295 - 10298
  • [9] Electron correlation effects in half-metallic transition metal oxides
    Huang, DJ
    Tjeng, LH
    Chen, J
    Chang, CF
    Wu, WP
    Rata, AD
    Hibma, T
    Chung, SC
    Shyu, SG
    Wu, CC
    Chen, CT
    [J]. SURFACE REVIEW AND LETTERS, 2002, 9 (02) : 1007 - 1015
  • [10] Various polarization features of a variably polarized undulator with different phasing modes
    Hwang, CS
    Yeh, ST
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1999, 420 (1-2) : 29 - 38
123