Superconductivity in Fibonacci chain

Authors

Meng Sun ⋅ CN Faculty of Science, Beijing University of Technology

Abstract

We study the interplay between the incommensurate disorder and superconductivity in the one-dimensional system with the s-wave pairing mechanism. Specifically, we consider the tight-binding model for the Fibonacci chain, which include the quasi-periodic modulation in on-site disorder. As the signature of multifractality, we observe the power-law dependence for the spatial correlation as the function of energy. By numerically calculating the transition temperature of the superconductivity, we find the enhancement of the critical temperature given by analytical prediction is underestimated. Furthermore, for the very weak coupling regime, we observe a crossover where self-averaging of the critical temperature breaks down and appears a strong fluctuation related to samples.

About the Speaker

Meng Sun, Faculty of Science, Beijing University of Technology

Meng Sun is a Lecturer at the Faculty of Science in Beijing University of Technology. He obtained his BSc in Applied Physics and MSc in Physics from Beijing University of Technology and his PhD in Physics from the University of Science and Technology in Daejeon, South Korea. He has previously held a postdoctoral research position at the Institute for Basic Science, also in Deajeon, South Korea. His areas of specialization include exciton polaritons loaded in artificial lattices, topological and non-Hermitian properties, numerical simulation of Gross-Pitaevskii equation, and hybrid Bose-Fermi systems.

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Issue

2023: Proceedings of the 41st Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2023-INV-3H-02

Section

Invited Presentations

Published

2023-07-01

How to Cite

[1]

M Sun, Superconductivity in Fibonacci chain, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-INV-3H-02 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-INV-3H-02.