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Title: Quantum critical scaling at a Bose-glass/superfluid transition: Theory and experiment for a model quantum magnet

Abstract

Here, we investigate the quantum phase transition from magnetic Bose Glass to magnetic Bose-Einstein condensation induced by a magnetic field in NiCl 2∙4SC(NH 2) 2 (dichloro-tetrakis-thiourea-nickel, or DTN), doped with Br (Br-DTN) or site diluted. Quantum Monte Carlo simulations for the quantum phase transition of the model Hamiltonian for Br-DTN, as well as for site-diluted DTN, are consistent with conventional scaling at the quantum critical point and with a critical exponent $$z$$ verifying the prediction $z = d$; moreover the correlation length exponent is found to be $ν = 0.75(10)$, and the order parameter exponent to be $β = 0.95(10)$. We investigate the low-temperature thermodynamics at the quantum critical field of Br-DTN both numerically and experimentally, and extract the power-law behavior of the magnetization and of the specific heat. Our results for the exponents of the power laws, as well as previous results for the scaling of the critical temperature to magnetic ordering with the applied field, are incompatible with the conventional crossover-scaling Ansatz proposed by Fisher et al. [Phys. Rev. B 40, 546 (1989)]. However they can all be reconciled within a phenomenological Ansatz in the presence of a dangerously irrelevant operator.

Authors:
 [1];  [2];  [3];  [3];  [4];  [3];  [5]
+ Show Author Affiliations
  1. Rice Univ., Houston, TX (United States). Dept. of Physics & Astronomy
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); National Inst. for Materials Physics, Bucharest-Magurele (Romania)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of Sao Paulo (Brazil). Inst. of Physics
  5. Univ. de Lyon, Lyon (France). Ecole Normale Supérieure de Lyon, Lab. de Physique
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)
OSTI Identifier:
1565036
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 86; Journal Issue: 13; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; materials science; physics

Citation Formats

Yu, Rong, Miclea, Corneliu F., Weickert, Franziska, Movshovich, Roman, Paduan-Filho, Armando, Zapf, Vivien S., and Roscilde, Tommaso. Quantum critical scaling at a Bose-glass/superfluid transition: Theory and experiment for a model quantum magnet. United States: N. p., 2012. Web. doi:10.1103/physrevb.86.134421.
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Yu, Rong, Miclea, Corneliu F., Weickert, Franziska, Movshovich, Roman, Paduan-Filho, Armando, Zapf, Vivien S., & Roscilde, Tommaso. Quantum critical scaling at a Bose-glass/superfluid transition: Theory and experiment for a model quantum magnet. United States. https://doi.org/10.1103/physrevb.86.134421
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Yu, Rong, Miclea, Corneliu F., Weickert, Franziska, Movshovich, Roman, Paduan-Filho, Armando, Zapf, Vivien S., and Roscilde, Tommaso. Tue . "Quantum critical scaling at a Bose-glass/superfluid transition: Theory and experiment for a model quantum magnet". United States. https://doi.org/10.1103/physrevb.86.134421. https://www.osti.gov/servlets/purl/1565036.
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@article{osti_1565036,
title = {Quantum critical scaling at a Bose-glass/superfluid transition: Theory and experiment for a model quantum magnet},
author = {Yu, Rong and Miclea, Corneliu F. and Weickert, Franziska and Movshovich, Roman and Paduan-Filho, Armando and Zapf, Vivien S. and Roscilde, Tommaso},
abstractNote = {Here, we investigate the quantum phase transition from magnetic Bose Glass to magnetic Bose-Einstein condensation induced by a magnetic field in NiCl2∙4SC(NH2)2 (dichloro-tetrakis-thiourea-nickel, or DTN), doped with Br (Br-DTN) or site diluted. Quantum Monte Carlo simulations for the quantum phase transition of the model Hamiltonian for Br-DTN, as well as for site-diluted DTN, are consistent with conventional scaling at the quantum critical point and with a critical exponent $z$ verifying the prediction $z = d$; moreover the correlation length exponent is found to be $ν = 0.75(10)$, and the order parameter exponent to be $β = 0.95(10)$. We investigate the low-temperature thermodynamics at the quantum critical field of Br-DTN both numerically and experimentally, and extract the power-law behavior of the magnetization and of the specific heat. Our results for the exponents of the power laws, as well as previous results for the scaling of the critical temperature to magnetic ordering with the applied field, are incompatible with the conventional crossover-scaling Ansatz proposed by Fisher et al. [Phys. Rev. B 40, 546 (1989)]. However they can all be reconciled within a phenomenological Ansatz in the presence of a dangerously irrelevant operator.},
doi = {10.1103/physrevb.86.134421},
url = {https://www.osti.gov/biblio/1565036}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 13,
volume = 86,
place = {United States},
year = {2012},
month = {10}
}
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https://doi.org/10.1103/physrevb.86.134421
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Works referenced in this record:

Magnetic Bose glass phases of coupled antiferromagnetic dimers with site dilution
journal, October 2010

Thermal Transport and Strong Mass Renormalization in NiCl 2 − 4 SC ( NH 2 ) 2
journal, January 2011

Bose glass and Mott glass of quasiparticles in a doped quantum magnet
journal, September 2012

Anderson localization and interactions in one-dimensional metals
journal, January 1988

Quantum phase transitions in coupled dimer compounds
journal, July 2005

Onset of superfluidity in He 4 films adsorbed on disordered substrates
journal, May 1997

Disordered quantum gases under control
journal, February 2010

Boson localization and the superfluid-insulator transition
journal, July 1989

Field induced disordered-local-moment phase in site-diluted spin-gap antiferromagnets
journal, January 2008

Critical Dynamics of the Dirty Boson Problem: Revisiting the Equality z = d
journal, June 2007

Quantum Localization in Bilayer Heisenberg Antiferromagnets with Site Dilution
journal, November 2005

Dirty Bosons: Twenty Years Later
journal, October 2008

Quantum Phase Transitions of Hard-Core Bosons in Background Potentials
journal, September 2006

Transition from Bose glass to a condensate of triplons in Tl 1 − x K x CuCl 3
journal, January 2011

Critical phenomena and renormalization-group theory
journal, October 2002

Quantum Monte Carlo with directed loops
journal, October 2002

Cold atoms in the presence of disorder
journal, March 2012

Field-induced criticality in a gapped quantum magnet with bond disorder
journal, March 2012

Superfluid-insulator transition in the disordered two-dimensional Bose-Hubbard model
journal, September 2011

Bose-Einstein Condensation of Dilute Magnons in TlCuCl 3
journal, June 2000

Bose-glass to superfluid transition in the three-dimensional Bose-Hubbard model
journal, May 2006

Low-temperature thermodynamic properties near the field-induced quantum critical point in NiCl 2 -4SC(NH 2 ) 2
journal, May 2012

Generic incommensurate transition in the two-dimensional boson Hubbard model
journal, July 2004

Magnetic Excitations in the Spin-1 Anisotropic Heisenberg Antiferromagnetic Chain System NiCl 2 − 4 SC ( NH 2 ) 2
journal, January 2007

Bose–Einstein condensation in magnetic insulators
journal, March 2008

Path-integral computation of superfluid densities
journal, December 1987

Reply to “Comment on ‘Transition from Bose glass to a condensate of triplons in Tl 1 − x K x CuCl 3 ’ ”
journal, June 2011

Universal phase diagram of disordered bosons from a doped quantum magnet
journal, January 2010

Bose-Glass Phases in Disordered Quantum Magnets
journal, November 2005

Phase Diagram of the Commensurate Two-Dimensional Disordered Bose-Hubbard Model
journal, October 2011

Coupled ladders in a magnetic field
journal, May 1999

Quantum Critical Dynamics Simulation of Dirty Boson Systems
journal, January 2012

Superfluid-Insulator Transition in Commensurate Disordered Bosonic Systems: Large-Scale Worm Algorithm Simulations
journal, January 2004

Finite-Size Scaling and Correlation Lengths for Disordered Systems
journal, December 1986

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    Works referencing / citing this record:

    Bose glass and Mott glass of quasiparticles in a doped quantum magnet
    journal, September 2012

    Criticality in a disordered quantum antiferromagnet studied by neutron diffraction
    journal, November 2013

    Quantum criticality in a three-dimensional spin system at zero field and pressure
    journal, October 2017

    Critical Exponents of the Superfluid–Bose-Glass Transition in Three Dimensions
    journal, June 2014

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