Structures and spin polarization of an antiferromagnet SrLaVMoO6
Structures and spin polarization of an antiferromagnet SrLaVMoO6
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反铁磁体 SrLaVMoO6 的结构和自旋极化
DOI：
10.3379/msjmag.0912rc0009
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发表时间：
2010
影响因子：
--
通讯作者：
K. Hono
中科院分区：
文献类型：
--
作者：
H. Matsushima;H. Gotoh;Y. Takeda;K. Ueda;H. Asano;J. Zhong;A. Rajanikanth;K. Hono
研究了双钙钛矿结构SrLaVMoO_6大块多晶样品的磁性和输运性质。结构分析表明，样品几乎为单相。磁化强度的测量表明，SrLaVMoO 6化合物在125 K时呈现出一个尖点，这是由于反铁磁转变。该化合物的电阻率ρ在10 ~ 300 K范围内表现出金属温度依赖性，在10 K时电阻率ρ值为450 μΩcm。使用点接触Andreev反射（PCAR）技术测量自旋极化P值为0.50。X射线光电子能谱（XPS）研究发现，SrLaVMoO 6与半金属Sr 2FeMoO 6的Mo电子态非常相似。这些结果进行了讨论，在可能的半金属反铁磁性介导的双交换相互作用。
The magnetic and transport properties of bulk polycrystalline samples of double perovskite SrLaVMoO6 have been investigated. Structural analyses have shown that the samples are almost in single phase. Magnetization measurements have indicated that the SrLaVMoO6 compound exhibits a cusp at 125K, which is attributable to an antiferromagnetic transition. Electrical resistivity ρ for the compound showed metallic temperature dependence from 10 to 300 K, with a resistivity ρ value 450 μΩcm at 10 K. A spin polarization P value was measured to be 0.50 using the point-contact Andreev reflection (PCAR) technique. It has been found from X-ray photoemission spectroscopy (XPS) study that SrLaVMoO6 closely resembles the half-metallic Sr2FeMoO6 in the electronic state of the Mo. These results were discussed in term of possible half metallic antiferromagnetism mediated by double-exchange interaction.
影响因子：
64.8
作者：
Kobayashi, KL;Kimura, T;Tokura, Y
通讯作者：
Tokura, Y