CRO2 - A NEW HALF-METALLIC FERROMAGNET
CRO2 - A NEW HALF-METALLIC FERROMAGNET
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DOI：
10.1103/physrevlett.59.2788
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发表时间：
1987-12-14
影响因子：
8.6
通讯作者：
RUF, R
中科院分区：
文献类型：
--
作者：
KAMPER, KP;SCHMITT, W;RUF, R
多晶CrO 2薄膜的自旋分辨光电子能谱表明，当结合能低于费米能级2 eV时，自旋极化率（P）接近+ 100%.尽管金属电阻率的行为，极低的强度观察到的光电发射光谱附近的EF。我们的研究结果是在最近的能带结构计算，预测氧化铬是一个半金属铁磁体P=+100%在EF。
Spin-resolved photoemission from polycrystalline Cr O 2 films shows a spin polarization (P) of nearly+ 100% for binding energies near 2 eV below the Fermi level (E F). Despite the metallic resistivity behavior, extremely low intensity is observed in the photoemission spectra near E F. Our findings are in contrast to recent band-structure calculations, predicting Cr O 2 to be a half-metallic ferromagnet with P=+ 100% at E F.