...
首页> 外文期刊>Physical review >Controllable spin-orbit coupling and its influence on the upper critical field in the chemically doped quasi-one-dimensional Nb_2PdS_5 superconductor
【24h】

Controllable spin-orbit coupling and its influence on the upper critical field in the chemically doped quasi-one-dimensional Nb_2PdS_5 superconductor

机译:化学掺杂准一维Nb_2PdS_5超导体的可控自旋轨道耦合及其对上临界场的影响

获取原文
获取原文并翻译 | 示例
           

摘要

By systematic chemical substitution of Pt and Ni in the newly discovered superconductor Nb_2PdS_5 (T_c ~ 6 K), we study the evolution of its superconducting properties with doping, focusing on the behavior of the upper critical field H_(c2). In contrast to the previous results of Se doping on S sites, superconductivity is found to be rather robust against the Pt and Ni dopants on the one-dimensional Pd chains. Most strikingly, the reduced H_(c2), i.e., the ratio of H_(c2)/T_c, is seen to be significantly enhanced by the heavier Pt doping but suppressed in the Ni-doped counterparts, distinct from the nearly constant value in the Se-doped samples. Our findings therefore suggest that the upper critical field of this system can be modified in a tunable fashion by chemical doping on the Pd chains with elements of varying mass numbers. The spin-orbit coupling on the Pd sites, by inference, should play an important role in the observed superconductivity and on the large upper critical field beyond the Pauli pair-breaking field.
机译:通过对新发现的超导体Nb_2PdS_5(T_c〜6 K)中的Pt和Ni进行系统化学取代,我们研究了掺杂后其超导性能的演变,重点研究了上临界场H_(c2)的行为。与先前在S位置上进行Se掺杂的结果相反,发现超导电性对一维Pd链上的Pt和Ni掺杂剂非常稳定。最为显着的是,降低的H_(c2),即H_(c2)/ T_c之比,被重度Pt掺杂显着增强,但在掺Ni的对应物中被抑制,这与Pb中几乎恒定的值不同。硒掺杂样品。因此,我们的发现表明,可以通过在Pd链上化学掺杂具有不同质量数的元素,以可调的方式修改该系统的上临界场。通过推论,Pd位置上的自旋轨道耦合应在观察到的超导性和保利对断裂场之外的大上临界场中起重要作用。

著录项

  • 来源
    《Physical review》 |2014年第9期|094520.1-094520.5|共5页
  • 作者单位

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China,Department of Physics, University of Shanghai for Science & Technology, Shanghai 200093, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

    Department of Physics and Hangzhou Key Laboratory of Quantum Matters, Hangzhou Normal University, Hangzhou 310036, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electrical and thermal conduction in crystalline metals and alloys;

    机译:晶体金属和合金中的导电和导热;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号