Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling
Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling
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DOI：
10.1103/physrevlett.118.246601
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发表时间：
2017-06-16
影响因子：
8.6
通讯作者：
Paschen, S.
中科院分区：
文献类型：
--
作者：
Dzsaber, S.;Prochaska, L.;Paschen, S.
最近对近藤绝缘体中拓扑非平凡电子态的理论研究指出了自旋轨道耦合（SOC）对于稳定这些状态的重要性。然而，调节近藤绝缘子 SOC 参数 lambda(SOC) 的系统实验研究仍然难以实现。主要原因是（化学）压力或掺杂的变化强烈影响近藤耦合 J(K) 和化学势 mu（这两个参数决定材料的基态），因此可能的 lambda(SOC) 调节效应仍然未被注意到。在这里，我们展示了替代系列 Ce3Bi4(Pt1-xPdx)(3) (0
Recent theoretical studies of topologically nontrivial electronic states in Kondo insulators have pointed to the importance of spin-orbit coupling (SOC) for stabilizing these states. However, systematic experimental studies that tune the SOC parameter lambda(SOC) in Kondo insulators remain elusive. The main reason is that variations of (chemical) pressure or doping strongly influence the Kondo coupling J(K) and the chemical potential mu-both essential parameters determining the ground state of the material-and thus possible lambda(SOC) tuning effects have remained unnoticed. Here, we present the successful growth of the substitution series Ce3Bi4(Pt1-xPdx)(3) (0