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首页> 外文期刊>Physical review >Three-dimensional hopping conduction triggered by magnetic ordering in the quasi-one-dimensional iron-ladder compounds BaFe_2S_3 and BaFe_2Se_3
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Three-dimensional hopping conduction triggered by magnetic ordering in the quasi-one-dimensional iron-ladder compounds BaFe_2S_3 and BaFe_2Se_3

机译：准一维铁梯形化合物Bafe_2S_3和BAFE_2SE_3，通过磁化磁化触发的三维跳跃传导

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摘要

Because the iron-ladder compounds BaFe_2X_3 (X = S or Se) possess highly anisotropic crystal, electronic, and magnetic structures, the order in certain degrees of freedom leads to interesting interplays among them. Here we present a systematic study of the dielectric behavior of BaFe_2S_3 and BaFe_2Se_3 along all crystallographic directions revealing the conduction mechanism and its relation to the underlying magnetic ordering. The temperature dependence of the DC conductivity indicates that the antiferromagnetic order is accompanied by a transition in the conduction mechanism from a simple activated behavior above T_n to three-dimensional variable range hopping below T_N. Although the magnetic structures that develop on BaFe_2S_3 and BaFe_2Se_3 are rather different-despite nearly identical crystal structures-we do not find significant difference in the conduction mechanism.
机译：因为铁梯化合物Bafe_2x_3（X = S或SE）具有高各向同性晶体，电子和磁性结构，所以在某些自由度中的顺序导致它们之间的有趣相互作用。在这里，我们展示了沿着沿着揭示传导机构的所有晶体观察的所有结晶方向的BAFE_2S_3和BAFE_2SE_3的系统研究及其与下面磁化的关系。直流电导率的温度依赖性表示反铁磁阶载体伴随着传导机制中的过渡到从上方的简单激活行为到T_N的三维可变范围跳跃在T_N之下。尽管在BAFE_2S_3和BAFE_2SE_3上产生的磁性结构相当不同 - 尽管近乎相同的晶体结构 - 我们在导通机构中没有显着差异。

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  • 来源
    《Physical review》 |2020年第3期|035120.1-035120.7|共7页
  • 作者

    Yuk Tai Chan; Seulki Roh; Soohyeon Shin; Tuson Park; Martin Dressel; Ece Uykur;

  • 作者单位

    Phvsikalisches Institut Universitaet Stuttgart 70569 Stuttgart Germany;

    Phvsikalisches Institut Universitaet Stuttgart 70569 Stuttgart Germany;

    Center for Quantum Materials and Superconductivity (CQMS) and Department of Physics Sungkyunkwan University Suwon 16419 Republic of Korea;

    Center for Quantum Materials and Superconductivity (CQMS) and Department of Physics Sungkyunkwan University Suwon 16419 Republic of Korea;

    Phvsikalisches Institut Universitaet Stuttgart 70569 Stuttgart Germany;

    Phvsikalisches Institut Universitaet Stuttgart 70569 Stuttgart Germany;

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