Bose glass and Mott glass of quasiparticles in a doped quantum magnet

doi:https://doi.org/10.1038/nature11406

Title: Bose glass and Mott glass of quasiparticles in a doped quantum magnet

Abstract

The low-temperature states of bosonic fluids exhibit fundamental quantum effects at the macroscopic scale: the best-known examples are Bose–Einstein condensation and superfluidity, which have been tested experimentally in a variety of different systems. When bosons interact, disorder can destroy condensation, leading to a ‘Bose glass’. This phase has been very elusive in experiments owing to the absence of any broken symmetry and to the simultaneous absence of a finite energy gap in the spectrum. Here we report the observation of a Bose glass of field-induced magnetic quasiparticles in a doped quantum magnet (bromine-doped dichloro-tetrakis-thiourea-nickel, DTN). The physics of DTN in a magnetic field is equivalent to that of a lattice gas of bosons in the grand canonical ensemble; bromine doping introduces disorder into the hopping and interaction strength of the bosons, leading to their localization into a Bose glass down to zero field, where it becomes an incompressible Mott glass. The transition from the Bose glass (corresponding to a gapless spin liquid) to the Bose–Einstein condensate (corresponding to a magnetically ordered phase) is marked by a universal exponent that governs the scaling of the critical temperature with the applied field, in excellent agreement with theoretical predictions. Our study represents amore »« less

Authors:: Yu, Rong; Yin, Liang; Sullivan, Neil S.; Xia, J. S.; Huan, Chao; Paduan-Filho, Armando; Oliveira Jr, Nei F.; Haas, Stephan; Steppke, Alexander; Miclea, Corneliu F.; Weickert, Franziska; Movshovich, Roman; Mun, Eun-Deok; Scott, Brian L.; Zapf, Vivien S.; Roscilde, Tommaso

Publication Date:: 2012-09-01

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of Southern California, Los Angeles, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1564845

DOE Contract Number:: FG02-05ER46240; FG03-01ER45908

Resource Type:: Journal Article

Journal Name:: Nature (London)

Additional Journal Information:: Journal Volume: 489; Journal Issue: 7416; Journal ID: ISSN 0028-0836

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: Science & Technology - Other Topics

Citation Formats


                    Yu, Rong, Yin, Liang, Sullivan, Neil S., Xia, J. S., Huan, Chao, Paduan-Filho, Armando, Oliveira Jr, Nei F., Haas, Stephan, Steppke, Alexander, Miclea, Corneliu F., Weickert, Franziska, Movshovich, Roman, Mun, Eun-Deok, Scott, Brian L., Zapf, Vivien S., and Roscilde, Tommaso. Bose glass and Mott glass of quasiparticles in a doped quantum magnet.  United States: N. p., 2012. 
        Web.  doi:10.1038/nature11406.

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                    Yu, Rong, Yin, Liang, Sullivan, Neil S., Xia, J. S., Huan, Chao, Paduan-Filho, Armando, Oliveira Jr, Nei F., Haas, Stephan, Steppke, Alexander, Miclea, Corneliu F., Weickert, Franziska, Movshovich, Roman, Mun, Eun-Deok, Scott, Brian L., Zapf, Vivien S., & Roscilde, Tommaso. Bose glass and Mott glass of quasiparticles in a doped quantum magnet.  United States.  https://doi.org/10.1038/nature11406

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                    Yu, Rong, Yin, Liang, Sullivan, Neil S., Xia, J. S., Huan, Chao, Paduan-Filho, Armando, Oliveira Jr, Nei F., Haas, Stephan, Steppke, Alexander, Miclea, Corneliu F., Weickert, Franziska, Movshovich, Roman, Mun, Eun-Deok, Scott, Brian L., Zapf, Vivien S., and Roscilde, Tommaso. Sat .  
        "Bose glass and Mott glass of quasiparticles in a doped quantum magnet".  United States.  https://doi.org/10.1038/nature11406.

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@article{osti_1564845,

  title        = {Bose glass and Mott glass of quasiparticles in a doped quantum magnet},

  author       = {Yu, Rong and Yin, Liang and Sullivan, Neil S. and Xia, J. S. and Huan, Chao and Paduan-Filho, Armando and Oliveira Jr, Nei F. and Haas, Stephan and Steppke, Alexander and Miclea, Corneliu F. and Weickert, Franziska and Movshovich, Roman and Mun, Eun-Deok and Scott, Brian L. and Zapf, Vivien S. and Roscilde, Tommaso},

  abstractNote = {The low-temperature states of bosonic fluids exhibit fundamental quantum effects at the macroscopic scale: the best-known examples are Bose–Einstein condensation and superfluidity, which have been tested experimentally in a variety of different systems. When bosons interact, disorder can destroy condensation, leading to a ‘Bose glass’. This phase has been very elusive in experiments owing to the absence of any broken symmetry and to the simultaneous absence of a finite energy gap in the spectrum. Here we report the observation of a Bose glass of field-induced magnetic quasiparticles in a doped quantum magnet (bromine-doped dichloro-tetrakis-thiourea-nickel, DTN). The physics of DTN in a magnetic field is equivalent to that of a lattice gas of bosons in the grand canonical ensemble; bromine doping introduces disorder into the hopping and interaction strength of the bosons, leading to their localization into a Bose glass down to zero field, where it becomes an incompressible Mott glass. The transition from the Bose glass (corresponding to a gapless spin liquid) to the Bose–Einstein condensate (corresponding to a magnetically ordered phase) is marked by a universal exponent that governs the scaling of the critical temperature with the applied field, in excellent agreement with theoretical predictions. Our study represents a quantitative experimental account of the universal features of disordered bosons in the grand canonical ensemble.},

  doi          = {10.1038/nature11406},

  url          = {https://www.osti.gov/biblio/1564845},
  journal      = {Nature (London)},

  issn         = {0028-0836},

  number       = 7416,

  volume       = 489,

  place        = {United States},

  year         = {2012},

  month        = {9}

}

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Title: Bose glass and Mott glass of quasiparticles in a doped quantum magnet

Abstract

Citation Formats

Localization: theory and experiment journal, December 1993

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

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

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

Localization of preformed Cooper pairs in disordered superconductors journal, January 2011

Single- and two-particle energy gaps across the disorder-driven superconductor–insulator transition journal, July 2011

Disordered quantum gases under control journal, February 2010

Exciton-polariton Bose-Einstein condensation journal, May 2010

Bose–Einstein condensation in magnetic insulators journal, March 2008

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

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

Field-induced quantum-disordered phases in S = 1 2 weakly coupled dimer systems with site dilution journal, October 2006

Disordered States in IPA − Cu ( Cl x Br 1 − x ) 3 Induced by Bond Randomness journal, August 2008

Evidence of a magnetic Bose glass in ( CH 3 ) 2 CHNH 3 Cu ( Cl { 0.95 } Br { 0.05 } ) 3 from neutron diffraction journal, February 2010

Bose-Einstein Condensation of S = 1 Nickel Spin Degrees of Freedom in NiCl 2 − 4 SC ( NH 2 ) 2 journal, February 2006

Direct Measurement of the Bose-Einstein Condensation Universality Class in NiCl 2 − 4 SC ( NH 2 ) 2 at Ultralow Temperatures journal, October 2008

Possible New Phase of Commensurate Insulators with Disorder: The Mott Glass journal, September 1999

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

Phase Transition in a System of One-Dimensional Bosons with Strong Disorder journal, October 2004

Mott Glass in Site-Diluted S = 1 Antiferromagnets with Single-Ion Anisotropy journal, July 2007

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

Spin dynamics of Ni Cl 2 − 4 S C ( N H 2 ) 2 in the field-induced ordered phase journal, March 2008

Magnetic Susceptibility Measurements at Ultra-low Temperatures journal, November 2009

Superfluid-Insulator Transition in a Commensurate One-Dimensional Bosonic System with Off-Diagonal Disorder journal, July 2005

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

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

Quantum Critical Point of the X Y Model and Condensation of Field-induced Quasiparticles in Dimer Compounds journal, December 2004

Quantum critical scaling at a Bose-glass/superfluid transition: Theory and experiment for a model quantum magnet journal, October 2012

Localization: theory and experiment
journal, December 1993

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

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

Onset of superfluidity in ${}^{4}{He}$ films adsorbed on disordered substrates
journal, May 1997

Localization of preformed Cooper pairs in disordered superconductors
journal, January 2011

Single- and two-particle energy gaps across the disorder-driven superconductor–insulator transition
journal, July 2011

Disordered quantum gases under control
journal, February 2010

Exciton-polariton Bose-Einstein condensation
journal, May 2010

Bose–Einstein condensation in magnetic insulators
journal, March 2008

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

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

Field-induced quantum-disordered phases in $S = \frac{1}{2}$ weakly coupled dimer systems with site dilution
journal, October 2006

Disordered States in $IPA − Cu ({Cl}_{x} {Br}_{1 - x})_{3}$ Induced by Bond Randomness
journal, August 2008

Evidence of a magnetic Bose glass in ${({CH}_{3})}_{2} {CHNH}_{3} Cu {({Cl}_{{0.95}} {Br}_{{0.05}})}_{3}$ from neutron diffraction
journal, February 2010

Bose-Einstein Condensation of $S = 1$ Nickel Spin Degrees of Freedom in ${NiCl}_{2} − 4 SC ({NH}_{2})_{2}$
journal, February 2006

Direct Measurement of the Bose-Einstein Condensation Universality Class in ${NiCl}_{2} − 4 SC ({NH}_{2})_{2}$ at Ultralow Temperatures
journal, October 2008

Possible New Phase of Commensurate Insulators with Disorder: The Mott Glass
journal, September 1999

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

Phase Transition in a System of One-Dimensional Bosons with Strong Disorder
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Mott Glass in Site-Diluted $S = 1$ Antiferromagnets with Single-Ion Anisotropy
journal, July 2007

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

Spin dynamics of $Ni {Cl}_{2} − 4 S C {(N H_{2})}_{2}$ in the field-induced ordered phase
journal, March 2008

Magnetic Susceptibility Measurements at Ultra-low Temperatures
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Superfluid-Insulator Transition in a Commensurate One-Dimensional Bosonic System with Off-Diagonal Disorder
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