Evaluation of evidence for magnetic polarons inEuB6
Evaluation of evidence for magnetic polarons inEuB6
复制标题
EuB6 磁极化子证据的评估
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
P. Littlewood
中科院分区：
文献类型：
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作者：
M. J. Calderón;L. Wegener;P. Littlewood
EuB6 是一种低载流子密度铁磁体，具有很大的磁阻（取决于温度的正磁阻或负磁阻）。自旋翻转拉曼散射实验表明，在磁临界温度之上会形成磁极化子。我们发现，必须考虑 EuB6 是半金属的事实来解释其电子特性，包括磁极化子和磁阻。
EuB6 is a low carrier density ferromagnet which exhibits large magnetoresistance, positive or negative depending on temperature. The formation of magnetic polarons just above the magnetic critical temperature has been suggested by spin-flip Raman scattering experiments. We find that the fact that EuB6 is a semimetal has to be taken into account to explain its electronic properties, including magnetic polarons and magnetoresistance.