Microwave Spectroscopy of a Weakly Pinned Charge Density Wave in a Superinductor

Manuel Houzet and Leonid I. Glazman
Phys. Rev. Lett. 122, 237701 – Published 13 June 2019
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Abstract

A chain of small Josephson junctions (a.k.a. superinductor) emerged recently as a high-inductance, low-loss element of superconducting quantum devices. We notice that the intrinsic parameters of a typical superinductor in fact place it into the Bose glass universality class for which the propagation of waves in a sufficiently long chain is hindered by pinning. Its weakness provides for a broad crossover from the spectrum of well-resolved plasmon standing waves at high frequencies to the low-frequency excitation spectrum of a pinned charge density wave. We relate the scattering amplitude of microwave photons reflected off a superinductor to the dynamics of a Bose glass. The dynamics at long and short scales compared to the Larkin pinning length determines the low- and high-frequency asymptotes of the reflection amplitude.

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  • Received 6 January 2019

DOI:https://doi.org/10.1103/PhysRevLett.122.237701

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Manuel Houzet

  • Univ. Grenoble Alpes, CEA, IRIG-Pheliqs, F-38000 Grenoble, France

Leonid I. Glazman

  • Department of Physics, Yale University, New Haven, Connecticut 06520, USA

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Issue

Vol. 122, Iss. 23 — 14 June 2019

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