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<p>Proximity-induced superconductivity with a clean interface has attracted much attention in recent years. We discuss how the commonly employed electron tunneling approximation can be hybridized with first-principles calculation to achieve a semi-quantitative characterization starting from the microscopic atomic structure. By using the graphene-Zn heterostructure as an example, we compare this approximated treatment to the full ab initio anisotropic Eliashberg formalism. Based on the calculation results, we show that interfacial effects beyond the electron tunneling approximation are noticeable even in a rather weakly coupled heterojunction.</p>

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Quantifying Proximity-Induced Superconductivity from First-Principles Calculations

  • 期刊论文

  • 发表日期：

    2025年7月31日

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  • Yunhao Li,
  • Zimeng Zeng,
  • Jizheng Wu,
  • Chen Si,
  • Zheng Liu

摘要

Proximity-induced superconductivity with a clean interface has attracted much attention in recent years. We discuss how the commonly employed electron tunneling approximation can be hybridized with first-principles calculation to achieve a semi-quantitative characterization starting from the microscopic atomic structure. By using the graphene-Zn heterostructure as an example, we compare this approximated treatment to the full ab initio anisotropic Eliashberg formalism. Based on the calculation results, we show that interfacial effects beyond the electron tunneling approximation are noticeable even in a rather weakly coupled heterojunction.