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Superconductivity in sodium-doped T-carbon

机译：钠掺杂T-碳中的超导性

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摘要

T-carbon had been proposed as a new carbon allotrope in 2011. which was successfully synthesized in recent experiments. Because of its fluffy structure, several kinds of atoms can be intercalated into T-carbon, making it a potential versatile candidate in various applications such as hydrogen storage, solar cells, lithium ion batteries, thermoelectrics, photocatalyst, etc. Here we show that superconductivity can appear in Na-doped T-carbon with a superconducting transition temperature T_c of 11 K at ambient pressure, and T_c can be enhanced to 19 K under a pressure of 14 GPa. The calculations on temperature dependence of specific heat and electrical and thermal conductivities show that the normal state of the Na-doped T-carbon superconductor is a non-Fermi liquid at temperature below 50 K. where the Wiedemann-Franz law is remarkably violated. The prediction of superconductivity in Na-doped T-carbon would spur great interest both experimentally and theoretically to explore novel carbon-based superconductors.
机译：已经提出了T-Carbon作为2011年的新碳异质折菌。在最近的实验中成功地合成。由于其蓬松的结构，几种原子可以插入到T碳中，使其在各种应用中的潜在通用候选者，例如储氢，太阳能电池，锂离子电池，热电，光催化剂等。在这里，我们表明超导性可以出现在Na掺杂的T-碳中，在环境压力下具有11k的超导转变温度T_C，并且T_C可以在14GPa的压力下增强至19k。对特定热和电和热导体的温度依赖性的计算表明，Na掺杂的T-碳超导体的正常状态是温度低于50k的非费米液体。在其中，Wiedemann-Franz定律显着侵犯。在实验和理论上，对Na掺杂的T-碳的超导性预测在实验和理论上促进新的碳基超导体。

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  • 来源
    《Physical review》 |2020年第18期|184521.1-184521.8|共8页
  • 作者

    Jing-Yang You; Bo Gu; Gang Su;

  • 作者单位

    School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China;

    Kavli Institute for Theoretical Sciences and CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijng 100190 China Physical Science Laboratory Huairou National Comprehensive Science Center Beijing 101400 China;

    School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China Kavli Institute for Theoretical Sciences and CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijng 100190 China Physical Science Laboratory Huairou National Comprehensive Science Center Beijing 101400 China;

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