The two critical temperatures conundrum in LSCO: theoretical resolution

ORAL

Abstract

We theoretically resolve a longstanding puzzle of the appearance of two different transition temperatures for in-plane and inter-plane superconducting stiffness, presented by recent experiment on La1.83Sr0.17CuO4 [1]. Using high precision Monte Carlo, we calculate the in-plane and inter-plane stiffness of anisotropic three-dimensional XY model and show the effect is reproduced in our simulations [2]. By mapping the model on a finite-volume quasi-one-dimensional Josephson chain, we can quantitatively explain the experimental values. We also provide analytical understanding of the results by deriving the essential singularity of the temperature dependent c-axis stiffness below the true thermodynamic transition temperature.



[1] I. Kapon, Z. Salman, I. Mangel, T. Prokscha, N. Gavish, and A. Keren, Nat. Comm. 10, 2463 (2019).

[2] Abhisek Samanta, Itay Mangel, Amit Keren, Daniel P. Arovas, Assa Auerbach, https://arxiv.org/abs/2308.15540

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Presenters

  • Itay Mangel

    Technion - Israel Institute of Technology

Authors

  • Abhisek Samanta

    The Ohio State University

  • Itay Mangel

    Technion - Israel Institute of Technology

  • Amit Keren

    Technion Israel Institute of Technology

  • Daniel P Arovas

    University of California, San Diego

  • Assa Auerbach

    Technion, Israel Institute of Technology