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Abstract <p>We report a numerical simulation of the heating of a niobium nitride film by a high-density current pulse (~10<sup>5</sup> A/cm<sup>2</sup>) at low temperatures (<i>T</i> &lt; 20 K) in its longitudinal section, based on a two-dimensional inhomogeneous heat equation. It is shown that at a current pulse of 0.25 ms, the maximum heating temperature of the film does not exceed 0.8 K when using pressure contacts made of beryllium bronze.</p>

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Simulation of the NbN Film Heating Process by a Current Pulse

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • N. D. Kuzmichev,
  • E. V. Danilova,
  • M. A. Vasyutin,
  • D. A. Shilkin

摘要

Abstract

We report a numerical simulation of the heating of a niobium nitride film by a high-density current pulse (~105 A/cm2) at low temperatures (T < 20 K) in its longitudinal section, based on a two-dimensional inhomogeneous heat equation. It is shown that at a current pulse of 0.25 ms, the maximum heating temperature of the film does not exceed 0.8 K when using pressure contacts made of beryllium bronze.