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Title: Dirty-boson physics with magnetic insulators

Abstract

We report on recent theoretical and experimental efforts aimed at the investigation of the physics of interacting disordered bosons (so-called dirty bosons) in the context of quantum magnetism. The physics of dirty bosons is relevant to a wide variety of condensed matter systems, encompassing helium in porous media, granular superconductors, and ultracold atoms in disordered optical potentials, to cite a few. Nevertheless, the understanding of the transition from a localized, Bose-glass phase to an ordered, superfluid condensate phase still represents a fundamentally open problem. Still to be constructed is also a quantitative description of the highly inhomogeneous and strongly correlated phases connected by the transition. We observe how disordered magnetic insulators in a strong magnetic field can provide a well-controlled realization of the above transition. Combining numerical simulations with experiments on real materials can demonstrate some fundamental properties of the critical behavior, such as the scaling of the critical temperature to condensation close to the quantum critical point.

Authors:
 [1];  [2]
  1. Federal Inst. of Technology, Zurich (Switzerland)
  2. Université de Lyon (France)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org.:
USDOE Office of Science (SC); Swiss National Science Foundation (SNSF)
OSTI Identifier:
1565133
Resource Type:
Accepted Manuscript
Journal Name:
Comptes Rendus. Physique
Additional Journal Information:
Journal Volume: 14; Journal Issue: 8; Journal ID: ISSN 1631-0705
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Quantum magnetism; Disorder effects; Bose glass

Citation Formats

Zheludev, Andrey, and Roscilde, Tommaso. Dirty-boson physics with magnetic insulators. United States: N. p., 2013. Web. doi:10.1016/j.crhy.2013.10.001.
Zheludev, Andrey, & Roscilde, Tommaso. Dirty-boson physics with magnetic insulators. United States. doi:10.1016/j.crhy.2013.10.001.
Zheludev, Andrey, and Roscilde, Tommaso. Fri . "Dirty-boson physics with magnetic insulators". United States. doi:10.1016/j.crhy.2013.10.001. https://www.osti.gov/servlets/purl/1565133.
@article{osti_1565133,
title = {Dirty-boson physics with magnetic insulators},
author = {Zheludev, Andrey and Roscilde, Tommaso},
abstractNote = {We report on recent theoretical and experimental efforts aimed at the investigation of the physics of interacting disordered bosons (so-called dirty bosons) in the context of quantum magnetism. The physics of dirty bosons is relevant to a wide variety of condensed matter systems, encompassing helium in porous media, granular superconductors, and ultracold atoms in disordered optical potentials, to cite a few. Nevertheless, the understanding of the transition from a localized, Bose-glass phase to an ordered, superfluid condensate phase still represents a fundamentally open problem. Still to be constructed is also a quantitative description of the highly inhomogeneous and strongly correlated phases connected by the transition. We observe how disordered magnetic insulators in a strong magnetic field can provide a well-controlled realization of the above transition. Combining numerical simulations with experiments on real materials can demonstrate some fundamental properties of the critical behavior, such as the scaling of the critical temperature to condensation close to the quantum critical point.},
doi = {10.1016/j.crhy.2013.10.001},
journal = {Comptes Rendus. Physique},
number = 8,
volume = 14,
place = {United States},
year = {2013},
month = {11}
}

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