EVIDENCE FOR A HIGH-TEMPERATURE SHORT-RANGE-MAGNETIC-ORDER TRANSITION IN MNO(001)
EVIDENCE FOR A HIGH-TEMPERATURE SHORT-RANGE-MAGNETIC-ORDER TRANSITION IN MNO(001)
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DOI：
10.1103/physrevlett.62.478
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发表时间：
1989-01-23
影响因子：
8.6
通讯作者：
FADLEY, CS
中科院分区：
文献类型：
--
作者：
HERMSMEIER, B;OSTERWALDER, J;FADLEY, CS
本文报道了反铁磁MnO（001）的自旋极化光电子衍射观察。自旋分裂Mn 3 s多重态在动能接近100 eV时的数据显示，在530±20 K（Néel温度的4.5倍）的温度下，S5：S7强度比发生突变。在更高的电子动能，沿着与方位角衍射测量，一个额外的温度相关的研究，支持的结论，这种突然的变化是由于一种新型的高温短程磁序转变。
We report the observation of spin-polarized photoelectron diffraction for antiferromagnetic MnO (001). Data at kinetic energies near 100 eV for the spin-split Mn 3 s multiplet show abrupt changes in the S 5: S 7 intensity ratio at a temperature of 530±20 K that is 4.5 times the Néel temperature. An additional temperature-dependent study done at higher electron kinetic energies, along with azimuthal diffraction measurements, support the conclusion that this abrupt change is due to a new type of high-temperature short-range-magnetic-order transition.