Effect of correlated disorder on superconductivity in a kagome lattice: A Bogoliubov–de Gennes analysis

IF 3.7 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review B Pub Date : 2024-11-07 DOI:10.1103/physrevb.110.184506

Ravi Kiran, Sudipta Biswas, Monodeep Chakraborty

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引用次数: 0

Abstract

This paper investigates the superconducting properties of a two-dimensional

𝑠

-wave superconductor on a kagome lattice subjected to correlated disorder. Using the Bogoliubov–de Gennes theory, we analyze the impact of disorder correlations on superconducting behavior. Additionally, we derive the stiffness formula for the kagome lattice and calculate its superfluid stiffness. An intriguing finding of our paper is the bimodal characteristic in the probability distribution of the superconducting pairing amplitude at higher disorder correlation strengths for intermediate values of the disordered potential. Our results provide valuable insights into how disorder correlations influence superconductivity and underscore the role of lattice geometry in shaping superconducting properties.

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相关无序对神户晶格超导性的影响：波哥留布夫-德-热分析

本文研究了一种二维𝑠波超导体的超导特性。我们利用波哥留布夫-德-吉尼斯理论分析了无序相关性对超导行为的影响。此外，我们还推导出了 kagome 晶格的刚度公式，并计算出了其超流体刚度。我们论文的一个引人入胜的发现是，在无序势的中间值下，当无序相关强度较高时，超导配对振幅的概率分布具有双峰特征。我们的研究结果为了解无序相关如何影响超导性提供了宝贵的见解，并强调了晶格几何在塑造超导特性中的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review B 物理-物理：凝聚态物理

CiteScore

6.70

自引率

32.40%

发文量

审稿时长

3.0 months

期刊介绍： Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide. PRB covers the full range of condensed matter, materials physics, and related subfields, including: -Structure and phase transitions -Ferroelectrics and multiferroics -Disordered systems and alloys -Magnetism -Superconductivity -Electronic structure, photonics, and metamaterials -Semiconductors and mesoscopic systems -Surfaces, nanoscience, and two-dimensional materials -Topological states of matter