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To investigate relationship between superconductivity, CDW, and electronic states, a promising approach is to manipulate the band structure by altering key physical parameters, such as pressure and carrier concentration. The first half of this chapter presents high-resolution ARPES results on Cs-dosed CsV3Sb5, where orbital-dependent electron doping effect results in suppression of CDW gap. In the latter half, anti-phase band shift of V- and Sb-derived bands by Nb substitution are revealed by ARPES and discussed as the origin of suppression of CDW and enhanced superconductivity in Nb substituted CsV3Sb5.

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Effects of Cs Dosing and Nb Substitution to CsV3Sb5

  • 章节

  • 发表日期：

    2025年

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  • Takemi Kato

摘要

To investigate relationship between superconductivity, CDW, and electronic states, a promising approach is to manipulate the band structure by altering key physical parameters, such as pressure and carrier concentration. The first half of this chapter presents high-resolution ARPES results on Cs-dosed CsV3Sb5, where orbital-dependent electron doping effect results in suppression of CDW gap. In the latter half, anti-phase band shift of V- and Sb-derived bands by Nb substitution are revealed by ARPES and discussed as the origin of suppression of CDW and enhanced superconductivity in Nb substituted CsV3Sb5.