**
**

**Basko, D. M.; Pfeiffer, F.; Adamus, P.; Holzmann, M. and Hekking, F. W. J. (2020): Superconductor-insulator transition in Josephson junction chains by quantum Monte Carlo calculations. In: Physical Review B, Vol. 101, No. 2, 024518**

**Full text not available from 'Open Access LMU'.**

## 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.

Item Type: | Journal article |
---|---|

Faculties: | Physics |

Subjects: | 500 Science > 530 Physics |

ISSN: | 2469-9950 |

Language: | English |

Item ID: | 89429 |

Date Deposited: | 25. Jan 2022, 09:30 |

Last Modified: | 25. Jan 2022, 09:30 |