论文标题
FE3SE4：可能的铁磁半磁性？
Fe3Se4: A Possible Ferrimagnetic Half-Metal?
论文作者
论文摘要
半金属的铁磁体在费米水平上显示100％自旋化，并且是自旋应用程序的理想候选者。尽管该领域进行了广泛的研究，但到目前为止，很少有人发现材料。在这里，我们基于密度功能理论和Fe3SE4的广泛物理特性测量值介绍了电子带结构计算的结果，该测量揭示了半金属性的特征。自旋极化电子带结构计算预测Fe3Se4的半金属铁磁性。电阻率遵循指数抑制了低温状态下的电子马格诺散射机制，并显示出磁性效应，该磁力效应将符号从负面变为正变为正，而在100 K左右的温度下降。其他有趣的观察结果包括霍尔电阻的异常行为，包括低于100 k的霍尔电阻和一个异型的霍尔系数，并且cancy cancation cancation cancation cancation cancation cancation cancation cancation cancative cancy cancy cancy cancy cancy cancy \ canth HO} ho} ho} ho} ho} ho} ho} ho} ho} ho} ho {
Half-metallic ferromagnets show 100% spin-polarization at the Fermi level and are ideal candidates for spintronic applications. Despite the extensive research in the field, very few materials have been discovered so far. Here we present results of electronic band structure calculations based on density functional theory and extensive physical-property measurements for Fe3Se4 revealing signatures of half-metallicity. The spin-polarized electronic band structure calculations predict half-metallic ferrimagnetism for Fe3Se4. The electrical resistivity follows exponentially suppressed electron-magnon scattering mechanism in the low-temperature regime and show a magnetoresistance effect that changes the sign from negative to positive with decreasing temperature around 100 K. Other intriguing observations include the anomalous behavior of Hall resistance below 100 K and an anomalous Hall coefficient that roughly follows the \r{ho}2 behavior.
