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Anisotropic transport properties of tetragonal SrFeO2.84 single crystal
Solid State Communications ( IF 2.1 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.ssc.2020.113992
Haohang Xu , Qingyuan Liu , Xuebo Zhou , Lei Tao , Mingxue Huo , Xianjie Wang , Yu Sui

Abstract The tetragonal SrFeO2.84 single crystal was grown by using floating zone method, and followed by resistivity and magnetization measurements with respect to temperature. Here, the magnetization data shows an antiferromagnetic ordering below 63 K, accompanied by the formation of the charge ordering. However, an anomalous insulator to metal transition occurs below 40 K in the basal plane of SrFeO2.84 single crystal, while the resistivity along the c axis still keeps insulating. Our results reveal that, the anisotropy of resistivity in SrFeO2.84 is caused by the magnetically driven orbital-selective Mott phase transition.

中文翻译:

四方SrFeO2.84单晶的各向异性输运特性

摘要 采用浮区法生长四方SrFeO2.84 单晶,然后进行电阻率和磁化强度随温度的测量。这里,磁化数据显示低于 63 K 的反铁磁有序,伴随着电荷有序的形成。然而,在低于 40 K 的 SrFeO2.84 单晶基面中发生了异常绝缘体到金属的转变,而沿 c 轴的电阻率仍然保持绝缘。我们的结果表明,SrFeO2.84 电阻率的各向异性是由磁驱动的轨道选择性莫特相变引起的。
更新日期:2020-09-01
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