Superconductor-insulator transition in Josephson junction chains by quantum Monte Carlo calculations

Basko DM, Pfeiffer F, Adamus P, Holzmann M, Hekking FWJ (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review B American Physical Society

Book Volume: 101

Article Number: 024518

Journal Issue: 2

DOI: 10.1103/PhysRevB.101.024518

Abstract

We study the zero-temperature phase diagram of a dissipationless and disorder-free Josephson junction chain. Namely, we determine the critical Josephson energy below which the chain becomes insulating as a function of the ratio of two capacitances: the capacitance of each Josephson junction and the capacitance between each superconducting island and the ground. We develop an imaginary-time path integral quantum Monte Carlo algorithm in the charge representation, which enables us to efficiently handle the electrostatic part of the chain Hamiltonian. We find that a large part of the phase diagram is determined by anharmonic corrections which are not captured by the standard Kosterlitz-Thouless renormalization group description of the transition.

Involved external institutions

University of Grenoble Alpes (UGA) / Université de Grenoble FR France (FR) Masaryk University CZ Czech Republic (CZ)

How to cite

APA:

Basko, D.M., Pfeiffer, F., Adamus, P., Holzmann, M., & Hekking, F.W.J. (2020). Superconductor-insulator transition in Josephson junction chains by quantum Monte Carlo calculations. Physical Review B, 101(2). https://dx.doi.org/10.1103/PhysRevB.101.024518

MLA:

Basko, D. M., et al. "Superconductor-insulator transition in Josephson junction chains by quantum Monte Carlo calculations." Physical Review B 101.2 (2020).

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