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Abstract <p>Superconducting FeSe<sub><i>x</i></sub>Te<sub>1–<i>x</i></sub> films grown on an amorphous substrate were discovered to exhibit a Berezinskii–Kosterlitz–Thouless transition indicative of quasi-two-dimensional behavior, leading to a pronounced decrease in the superconducting transition temperature of the films. A stoichiometrically modified initial layer approximately 40 nm thick was identified, which explains the observed quasi‑two‑dimensionality.</p>

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Structure of FeSeTe Films on an Amorphous Substrate

  • 期刊论文

  • 发表日期：

    2025年11月7日

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  • A. V. Petrov,
  • O. V. Snigirev,
  • E. A. Ovchenkov,
  • A. G. Maresov,
  • Yu. V. Blinova,
  • D. I. Devyaterikov,
  • N. V. Porokhov,
  • D. A. Chareev,
  • A. V. Lubenchenko

摘要

Abstract

Superconducting FeSexTe1–x films grown on an amorphous substrate were discovered to exhibit a Berezinskii–Kosterlitz–Thouless transition indicative of quasi-two-dimensional behavior, leading to a pronounced decrease in the superconducting transition temperature of the films. A stoichiometrically modified initial layer approximately 40 nm thick was identified, which explains the observed quasi‑two‑dimensionality.