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<p>We investigate the superconducting properties of molybdenum disulfide (MoS<sub>2</sub>) monolayer across a broad doping range, successfully recreating the so far unresolved superconducting dome. Our first-principles findings reveal several dynamically stable phases across the doping-dependent phase diagram. We observe a doping-induced increase in the superconducting transition temperature <i>T</i><sub><i>c</i></sub>, followed by a reduction in <i>T</i><sub><i>c</i></sub> due to the formation of charge density waves (CDWs), polaronic distortions, and structural transition from the H to the 1T′ phase. Our work reconciles various experimental observations of CDWs in MoS<sub>2</sub> with its doping-dependent superconducting dome structure, which occurs due to the 1 × 1 H to 2 × 2 CDW phase transition.</p>

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Understanding the origin of superconducting dome in electron-doped MoS2 monolayer

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月26日

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  • Nina Girotto Erhardt,
  • Jan Berges,
  • Samuel Poncé,
  • Dino Novko

摘要

We investigate the superconducting properties of molybdenum disulfide (MoS2) monolayer across a broad doping range, successfully recreating the so far unresolved superconducting dome. Our first-principles findings reveal several dynamically stable phases across the doping-dependent phase diagram. We observe a doping-induced increase in the superconducting transition temperature Tc, followed by a reduction in Tc due to the formation of charge density waves (CDWs), polaronic distortions, and structural transition from the H to the 1T′ phase. Our work reconciles various experimental observations of CDWs in MoS2 with its doping-dependent superconducting dome structure, which occurs due to the 1 × 1 H to 2 × 2 CDW phase transition.