期刊
PHYSICAL REVIEW LETTERS
卷 103, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.097203
关键词
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资金
- NSF [DMR 0706493]
- DFG [MO 1731/1-1]
- NERSC
- Direct For Mathematical & Physical Scien [0706493] Funding Source: National Science Foundation
- Division Of Materials Research [0706493] Funding Source: National Science Foundation
We carry out first-principles calculations of the dependence of the intrinsic anomalous Hall conductivity of hcp Co on the spin magnetization direction. The Hall conductivity drops from 481 to 116 S/cm as the magnetization is tilted from the easy axis (c axis) to the ab plane. These values agree reasonably well with measurements on single crystals, while the angular average of 226 S/cm is in excellent agreement with the value of 205 S/cm measured in polycrystalline films. The strong intrinsic anisotropy is shown to arise from quasidegeneracies near the Fermi level.
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