Quasiparticle-continuum level repulsion in a quantum magnet

Plumb, K. W.; Hwang, Kyusung; Qiu, Y.; Harriger, Leland W.; Granroth, G. Â E.; Kolesnikov, Alexander I.; Shu, G. J.; Chou, F. C.; Rüegg, Ch.; Kim, Yong Baek; Kim, Young-June

doi:10.1038/nphys3566

Title: Quasiparticle-continuum level repulsion in a quantum magnet

Abstract

When the energy eigenvalues of two coupled quantum states approach each other in a certain parameter space, their energy levels repel each other and level crossing is avoided. Such level repulsion, or avoided level crossing, is commonly used to describe the dispersion relation of quasiparticles in solids. But, little is known about the level repulsion when more than two quasiparticles are present; for example, in a strongly interacting quantum system where a quasiparticle can spontaneously decay into a many-particle continuum. Here we show that even in this case level repulsion exists between a long-lived quasiparticle state and a continuum. Here, we observe a renormalization of the quasiparticle dispersion relation due to the presence of the continuum of multi-quasiparticle states, in our fine-resolution neutron spectroscopy study of magnetic quasiparticles in the frustrated quantum magnet BiCu₂PO₆.

Authors:

Plumb, K. W. ^[1]; Hwang, Kyusung ^[1]; Qiu, Y. ^[2]; Harriger, Leland W. ^[3];

^[4]; Kolesnikov, Alexander I. ^[4]; Shu, G. J. ^[5]; Chou, F. C. ^[5]; Rüegg, Ch. ^[6]; Kim, Yong Baek ^[1]; Kim, Young-June ^[1]

Univ. of Toronto, ON (Canada)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
National Taiwan Univ., Taipei (Taiwan)
Paul Scherrer Inst., Villigen (Switzerland). Lab. for Neutron Scattering and Imaging

Publication Date:: Mon Nov 30 00:00:00 EST 2015

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1265876

Grant/Contract Number:: AC05-00OR22725; DMR-0944772

Resource Type:: Accepted Manuscript

Journal Name:: Nature Physics

Additional Journal Information:: Journal Volume: 12; Journal Issue: 3; Journal ID: ISSN 1745-2473

Publisher:: Nature Publishing Group (NPG)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; magnetic properties and materials; quantum fluids and solids; quantum mechanics

Citation Formats


                    Plumb, K. W., Hwang, Kyusung, Qiu, Y., Harriger, Leland W., Granroth, G. Â E., Kolesnikov, Alexander I., Shu, G. J., Chou, F. C., Rüegg, Ch., Kim, Yong Baek, and Kim, Young-June. Quasiparticle-continuum level repulsion in a quantum magnet.  United States: N. p., 2015. 
Web.  doi:10.1038/nphys3566.

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                    Plumb, K. W., Hwang, Kyusung, Qiu, Y., Harriger, Leland W., Granroth, G. Â E., Kolesnikov, Alexander I., Shu, G. J., Chou, F. C., Rüegg, Ch., Kim, Yong Baek, & Kim, Young-June. Quasiparticle-continuum level repulsion in a quantum magnet.  United States.  https://doi.org/10.1038/nphys3566

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                    Plumb, K. W., Hwang, Kyusung, Qiu, Y., Harriger, Leland W., Granroth, G. Â E., Kolesnikov, Alexander I., Shu, G. J., Chou, F. C., Rüegg, Ch., Kim, Yong Baek, and Kim, Young-June. Mon .  
"Quasiparticle-continuum level repulsion in a quantum magnet".  United States.  https://doi.org/10.1038/nphys3566.  https://www.osti.gov/servlets/purl/1265876.

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@article{osti_1265876,

  title        = {Quasiparticle-continuum level repulsion in a quantum magnet},

  author       = {Plumb, K. W. and Hwang, Kyusung and Qiu, Y. and Harriger, Leland W. and Granroth, G. Â E. and Kolesnikov, Alexander I. and Shu, G. J. and Chou, F. C. and Rüegg, Ch. and Kim, Yong Baek and Kim, Young-June},

  abstractNote = {When the energy eigenvalues of two coupled quantum states approach each other in a certain parameter space, their energy levels repel each other and level crossing is avoided. Such level repulsion, or avoided level crossing, is commonly used to describe the dispersion relation of quasiparticles in solids. But, little is known about the level repulsion when more than two quasiparticles are present; for example, in a strongly interacting quantum system where a quasiparticle can spontaneously decay into a many-particle continuum. Here we show that even in this case level repulsion exists between a long-lived quasiparticle state and a continuum. Here, we observe a renormalization of the quasiparticle dispersion relation due to the presence of the continuum of multi-quasiparticle states, in our fine-resolution neutron spectroscopy study of magnetic quasiparticles in the frustrated quantum magnet BiCu2PO6.},

  doi          = {10.1038/nphys3566},

  journal      = {Nature Physics},

  number       = 3,

  volume       = 12,

  place        = {United States},

  year         = {Mon Nov 30 00:00:00 EST 2015},

  month        = {Mon Nov 30 00:00:00 EST 2015}

}

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Works referenced in this record:

A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics
journal, January 1958

Dzyaloshinsky, I.
Journal of Physics and Chemistry of Solids, Vol. 4, Issue 4
DOI: 10.1016/0022-3697(58)90076-3

The Disk Chopper Spectrometer at NIST: a new instrument for quasielastic neutron scattering studies
journal, August 2003

Copley, J. R. D.; Cook, J. C.
Chemical Physics, Vol. 292, Issue 2-3
DOI: 10.1016/s0301-0104(03)00124-1

SEQUOIA: A Newly Operating Chopper Spectrometer at the SNS
journal, November 2010

Granroth, G. E.; Kolesnikov, A. I.; Sherline, T. E.
Journal of Physics: Conference Series, Vol. 251
DOI: 10.1088/1742-6596/251/1/012058

Bose–Einstein condensation in magnetic insulators
journal, March 2008

Giamarchi, Thierry; Rüegg, Christian; Tchernyshyov, Oleg
Nature Physics, Vol. 4, Issue 3
DOI: 10.1038/nphys893

Quasiparticle breakdown in a quantum spin liquid
journal, March 2006

Stone, Matthew B.; Zaliznyak, Igor A.; Hong, Tao
Nature, Vol. 440, Issue 7081
DOI: 10.1038/nature04593

Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals
journal, December 1958

Hopfield, J. J.
Physical Review, Vol. 112, Issue 5
DOI: 10.1103/PhysRev.112.1555

Colloquium : Spontaneous magnon decays
journal, January 2013

Zhitomirsky, M. E.; Chernyshev, A. L.
Reviews of Modern Physics, Vol. 85, Issue 1
DOI: 10.1103/RevModPhys.85.219

Dynamics of Composite Haldane Spin Chains in $IPA − {CuCl}_{3}$
journal, February 2006

Masuda, T.; Zheludev, A.; Manaka, H.
Physical Review Letters, Vol. 96, Issue 4
DOI: 10.1103/PhysRevLett.96.047210

Dynamics of quantum systems embedded in a continuum
journal, February 2003

Okołowicz, J.; Płoszajczak, M.; Rotter, I.
Physics Reports, Vol. 374, Issue 4-5
DOI: 10.1016/S0370-1573(02)00366-6

Fano resonances in nanoscale structures
journal, August 2010

Miroshnichenko, Andrey E.; Flach, Sergej; Kivshar, Yuri S.
Reviews of Modern Physics, Vol. 82, Issue 3
DOI: 10.1103/RevModPhys.82.2257

Bridging frustrated-spin-chain and spin-ladder physics: Quasi-one-dimensional magnetism of ${BiCu}_{2} {PO}_{6}$
journal, October 2010

Tsirlin, Alexander A.; Rousochatzakis, Ioannis; Kasinathan, Deepa
Physical Review B, Vol. 82, Issue 14
DOI: 10.1103/PhysRevB.82.144426

Melting of a frustration-induced dimer crystal and incommensurability in the $J_{1}$ - $J_{2}$ two-leg ladder
journal, October 2011

Lavarélo, Arthur; Roux, Guillaume; Laflorencie, Nicolas
Physical Review B, Vol. 84, Issue 14
DOI: 10.1103/PhysRevB.84.144407

Magnon Dispersion in the Field-Induced Magnetically Ordered Phase of ${T l C u C l}_{3}$
journal, July 2002

Matsumoto, Masashige; Normand, B.; Rice, T. M.
Physical Review Letters, Vol. 89, Issue 7
DOI: 10.1103/PhysRevLett.89.077203

Anisotropic Superexchange Interaction and Weak Ferromagnetism
journal, October 1960

Moriya, Tôru
Physical Review, Vol. 120, Issue 1
DOI: 10.1103/PhysRev.120.91

Moriya’s anisotropic superexchange interaction, frustration, and Dzyaloshinsky’s weak ferromagnetism
journal, August 1992

Shekhtman, L.; Entin-Wohlman, O.; Aharony, Amnon
Physical Review Letters, Vol. 69, Issue 5
DOI: 10.1103/PhysRevLett.69.836

Anisotropic spin Hamiltonians due to spin-orbit and Coulomb exchange interactions
journal, October 1995

Yildirim, T.; Harris, A. B.; Aharony, Amnon
Physical Review B, Vol. 52, Issue 14
DOI: 10.1103/PhysRevB.52.10239

Bond-operator representation of quantum spins: Mean-field theory of frustrated quantum Heisenberg antiferromagnets
journal, May 1990

Sachdev, Subir; Bhatt, R. N.
Physical Review B, Vol. 41, Issue 13
DOI: 10.1103/PhysRevB.41.9323

Spin ladders with spin gaps: A description of a class of cuprates
journal, April 1994

Gopalan, Sudha; Rice, T. M.; Sigrist, M.
Physical Review B, Vol. 49, Issue 13
DOI: 10.1103/PhysRevB.49.8901

Field- and pressure-induced magnetic quantum phase transitions in ${TlCuCl}_{3}$
journal, February 2004

Matsumoto, Masashige; Normand, B.; Rice, T. M.
Physical Review B, Vol. 69, Issue 5
DOI: 10.1103/PhysRevB.69.054423

Anisotropic Cascade of Field-Induced Phase Transitions in the Frustrated Spin-Ladder System ${BiCu}_{2} {PO}_{6}$
journal, October 2012

Kohama, Yoshimitsu; Wang, Shuang; Uchida, Atsuko
Physical Review Letters, Vol. 109, Issue 16
DOI: 10.1103/PhysRevLett.109.167204

Spectral Properties of Magnetic Excitations in Cuprate Two-Leg Ladder Systems
journal, October 2005

Schmidt, Kai P.; Uhrig, GÖTz S.
Modern Physics Letters B, Vol. 19, Issue 24
DOI: 10.1142/S0217984905009237

One- and Two-Triplon Spectra of a Cuprate Ladder
journal, January 2007

Notbohm, S.; Ribeiro, P.; Lake, B.
Physical Review Letters, Vol. 98, Issue 2
DOI: 10.1103/PhysRevLett.98.027403

Spectral and Thermodynamic Properties of a Strong-Leg Quantum Spin Ladder
journal, April 2012

Schmidiger, D.; Bouillot, P.; Mühlbauer, S.
Physical Review Letters, Vol. 108, Issue 16
DOI: 10.1103/PhysRevLett.108.167201

Decay of quasiparticles in quantum spin liquids
journal, March 2006

Zhitomirsky, M. E.
Physical Review B, Vol. 73, Issue 10
DOI: 10.1103/PhysRevB.73.100404

Triplet Waves in a Quantum Spin Liquid
journal, May 2000

Xu, Guangyong; Broholm, C.; Reich, Daniel H.
Physical Review Letters, Vol. 84, Issue 19
DOI: 10.1103/PhysRevLett.84.4465

Frustration-induced two-dimensional quantum disordered phase in piperazinium hexachlorodicuprate
journal, September 2001

Stone, M. B.; Zaliznyak, I.; Reich, Daniel H.
Physical Review B, Vol. 64, Issue 14
DOI: 10.1103/PhysRevB.64.144405

Incommensurate dynamic correlations in the quasi-two-dimensional spin liquid BiCu $_{2}$ PO $_{6}$
journal, July 2013

Plumb, K. W.; Yamani, Zahra; Matsuda, M.
Physical Review B, Vol. 88, Issue 2
DOI: 10.1103/PhysRevB.88.024402

Bose-Einstein Condensation in Magnetic Insulators
text, January 2007

Giamarchi, T.; Rüegg, Ch.; Tchernyshyov, O.
arXiv
DOI: 10.48550/arxiv.0712.2250

Fano resonances in nanoscale structures
text, January 2009

Miroshnichenko, Andrey E.; Flach, Sergej; Kivshar, Yuri S.
arXiv
DOI: 10.48550/arxiv.0902.3014

Spectral and thermodynamic properties of a strong-leg quantum spin ladder
text, January 2011

Schmidiger, D.; Bouillot, P.; Muhlbauer, S.
arXiv
DOI: 10.48550/arxiv.1112.4307

Frustration-Induced Two Dimensional Quantum Disordered Phase in Piperazinium Hexachlorodicuprate
text, January 2001

Stone, M. B.; Zaliznyak, I.; Reich, Daniel H.
arXiv
DOI: 10.48550/arxiv.cond-mat/0104150

Field- and pressure-induced magnetic quantum phase transitions in TlCuCl_3
text, January 2003

Matsumoto, M.; Normand, B.; Rice, T. M.
arXiv
DOI: 10.48550/arxiv.cond-mat/0309440

Spectral Properties of Magnetic Excitations in Cuprate Two-Leg Ladder Systems
text, January 2005

Schmidt, Kai P.; Uhrig, Goetz S.
arXiv
DOI: 10.48550/arxiv.cond-mat/0508349

Quasiparticle breakdown in a quantum spin liquid
text, January 2005

Stone, Matthew B.; Zaliznyak, Igor A.; Hong, Tao
arXiv
DOI: 10.48550/arxiv.cond-mat/0511266

Works referencing / citing this record:

Giant suppression of phononic heat transport in a quantum magnet BiCu2PO6
journal, November 2016

Jeon, Byung-Gu; Koteswararao, B.; Park, C. B.
Scientific Reports, Vol. 6, Issue 1
DOI: 10.1038/srep36970

Theory of triplon dynamics in the quantum magnet ${BiCu}_{2} {PO}_{6}$
journal, June 2016

Hwang, Kyusung; Kim, Yong Baek
Physical Review B, Vol. 93, Issue 23
DOI: 10.1103/physrevb.93.235130

Field induced spontaneous quasiparticle decay and renormalization of quasiparticle dispersion in a quantum antiferromagnet
journal, May 2017

Hong, Tao; Qiu, Y.; Matsumoto, M.
Nature Communications, Vol. 8, Issue 1
DOI: 10.1038/ncomms15148

Minimal model for the frustrated spin ladder system ${BiCu}_{2} {PO}_{6}$
journal, October 2016

Splinter, Leanna; Drescher, Nils A.; Krull, Holger
Physical Review B, Vol. 94, Issue 15
DOI: 10.1103/physrevb.94.155115

Magnetic phase diagram of a frustrated spin ladder
journal, April 2018

Sugimoto, Takanori; Mori, Michiyasu; Tohyama, Takami
Physical Review B, Vol. 97, Issue 14
DOI: 10.1103/physrevb.97.144424

Zigzag spin chains in the spin-5/2 antiferromagnet Ba ₂ Mn(PO ₄ ) ₂
journal, January 2019

Yogi, Arvind; Bera, A. K.; Mohan, Ashwin
Inorganic Chemistry Frontiers, Vol. 6, Issue 10
DOI: 10.1039/c9qi00570f

Neutron Instruments for Research in Coordination Chemistry: Neutron Instruments for Research in Coordination Chemistry
journal, January 2019

Xue, Zi-Ling; Ramirez-Cuesta, Anibal J.; Brown, Craig M.
European Journal of Inorganic Chemistry, Vol. 2019, Issue 8
DOI: 10.1002/ejic.201801076

Triplet excitations in the frustrated spin ladder ${Li}_{2} {Cu}_{2} O {({SO}_{4})}_{2}$
journal, February 2019

Vaccarelli, O.; Honecker, A.; Giura, P.
Physical Review B, Vol. 99, Issue 6
DOI: 10.1103/physrevb.99.064416

Field-induced decays in XXZ triangular-lattice antiferromagnets
journal, October 2016

Maksimov, P. A.; Zhitomirsky, M. E.; Chernyshev, A. L.
Physical Review B, Vol. 94, Issue 14
DOI: 10.1103/physrevb.94.140407

Avoided quasiparticle decay from strong quantum interactions
journal, May 2019

Verresen, Ruben; Moessner, Roderich; Pollmann, Frank
Nature Physics, Vol. 15, Issue 8
DOI: 10.1038/s41567-019-0535-3

Absence of localized edge modes in spite of a non-trivial Zak phase in ${BiCu}_{2} {PO}_{6}$
journal, December 2019

Malki, M.; Müller, L.; Uhrig, G. S.
Physical Review Research, Vol. 1, Issue 3
DOI: 10.1103/physrevresearch.1.033197

Field induced spontaneous quasiparticle decay and renormalization of quasiparticle dispersion in a quantum antiferromagnet
text, January 2016

Hong, Tao; Qiu, Y.; Matsumoto, M.
arXiv
DOI: 10.48550/arxiv.1608.08172

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Title: Quasiparticle-continuum level repulsion in a quantum magnet

Abstract

Citation Formats

A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics journal, January 1958

The Disk Chopper Spectrometer at NIST: a new instrument for quasielastic neutron scattering studies journal, August 2003

SEQUOIA: A Newly Operating Chopper Spectrometer at the SNS journal, November 2010

Bose–Einstein condensation in magnetic insulators journal, March 2008

Quasiparticle breakdown in a quantum spin liquid journal, March 2006

Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals journal, December 1958

Colloquium : Spontaneous magnon decays journal, January 2013

Dynamics of Composite Haldane Spin Chains in IPA − CuCl 3 journal, February 2006

Dynamics of quantum systems embedded in a continuum journal, February 2003

Fano resonances in nanoscale structures journal, August 2010

Bridging frustrated-spin-chain and spin-ladder physics: Quasi-one-dimensional magnetism of BiCu 2 PO 6 journal, October 2010

Melting of a frustration-induced dimer crystal and incommensurability in the J 1 - J 2 two-leg ladder journal, October 2011

Magnon Dispersion in the Field-Induced Magnetically Ordered Phase of T l C u C l 3 journal, July 2002

Anisotropic Superexchange Interaction and Weak Ferromagnetism journal, October 1960

Moriya’s anisotropic superexchange interaction, frustration, and Dzyaloshinsky’s weak ferromagnetism journal, August 1992

Anisotropic spin Hamiltonians due to spin-orbit and Coulomb exchange interactions journal, October 1995

Bond-operator representation of quantum spins: Mean-field theory of frustrated quantum Heisenberg antiferromagnets journal, May 1990

Spin ladders with spin gaps: A description of a class of cuprates journal, April 1994

Field- and pressure-induced magnetic quantum phase transitions in TlCuCl 3 journal, February 2004

Anisotropic Cascade of Field-Induced Phase Transitions in the Frustrated Spin-Ladder System BiCu 2 PO 6 journal, October 2012

Spectral Properties of Magnetic Excitations in Cuprate Two-Leg Ladder Systems journal, October 2005

One- and Two-Triplon Spectra of a Cuprate Ladder journal, January 2007

Spectral and Thermodynamic Properties of a Strong-Leg Quantum Spin Ladder journal, April 2012

Decay of quasiparticles in quantum spin liquids journal, March 2006

Triplet Waves in a Quantum Spin Liquid journal, May 2000

Frustration-induced two-dimensional quantum disordered phase in piperazinium hexachlorodicuprate journal, September 2001

Incommensurate dynamic correlations in the quasi-two-dimensional spin liquid BiCu 2 PO 6 journal, July 2013

Bose-Einstein Condensation in Magnetic Insulators text, January 2007

Fano resonances in nanoscale structures text, January 2009

Spectral and thermodynamic properties of a strong-leg quantum spin ladder text, January 2011

Frustration-Induced Two Dimensional Quantum Disordered Phase in Piperazinium Hexachlorodicuprate text, January 2001

Field- and pressure-induced magnetic quantum phase transitions in TlCuCl_3 text, January 2003

Spectral Properties of Magnetic Excitations in Cuprate Two-Leg Ladder Systems text, January 2005

Quasiparticle breakdown in a quantum spin liquid text, January 2005

Giant suppression of phononic heat transport in a quantum magnet BiCu2PO6 journal, November 2016

Theory of triplon dynamics in the quantum magnet BiCu 2 PO 6 journal, June 2016

Field induced spontaneous quasiparticle decay and renormalization of quasiparticle dispersion in a quantum antiferromagnet journal, May 2017

Minimal model for the frustrated spin ladder system BiCu 2 PO 6 journal, October 2016

Magnetic phase diagram of a frustrated spin ladder journal, April 2018

Zigzag spin chains in the spin-5/2 antiferromagnet Ba 2 Mn(PO 4 ) 2 journal, January 2019

Neutron Instruments for Research in Coordination Chemistry: Neutron Instruments for Research in Coordination Chemistry journal, January 2019

Triplet excitations in the frustrated spin ladder Li 2 Cu 2 O ( SO 4 ) 2 journal, February 2019

Field-induced decays in XXZ triangular-lattice antiferromagnets journal, October 2016

Avoided quasiparticle decay from strong quantum interactions journal, May 2019

Absence of localized edge modes in spite of a non-trivial Zak phase in BiCu 2 PO 6 journal, December 2019

Field induced spontaneous quasiparticle decay and renormalization of quasiparticle dispersion in a quantum antiferromagnet text, January 2016

A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics
journal, January 1958

The Disk Chopper Spectrometer at NIST: a new instrument for quasielastic neutron scattering studies
journal, August 2003

SEQUOIA: A Newly Operating Chopper Spectrometer at the SNS
journal, November 2010

Bose–Einstein condensation in magnetic insulators
journal, March 2008

Quasiparticle breakdown in a quantum spin liquid
journal, March 2006

Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals
journal, December 1958

Colloquium : Spontaneous magnon decays
journal, January 2013

Dynamics of Composite Haldane Spin Chains in $IPA − {CuCl}_{3}$
journal, February 2006

Dynamics of quantum systems embedded in a continuum
journal, February 2003

Fano resonances in nanoscale structures
journal, August 2010

Bridging frustrated-spin-chain and spin-ladder physics: Quasi-one-dimensional magnetism of ${BiCu}_{2} {PO}_{6}$
journal, October 2010

Melting of a frustration-induced dimer crystal and incommensurability in the $J_{1}$ - $J_{2}$ two-leg ladder
journal, October 2011

Magnon Dispersion in the Field-Induced Magnetically Ordered Phase of ${T l C u C l}_{3}$
journal, July 2002

Anisotropic Superexchange Interaction and Weak Ferromagnetism
journal, October 1960

Moriya’s anisotropic superexchange interaction, frustration, and Dzyaloshinsky’s weak ferromagnetism
journal, August 1992

Anisotropic spin Hamiltonians due to spin-orbit and Coulomb exchange interactions
journal, October 1995

Bond-operator representation of quantum spins: Mean-field theory of frustrated quantum Heisenberg antiferromagnets
journal, May 1990

Spin ladders with spin gaps: A description of a class of cuprates
journal, April 1994

Field- and pressure-induced magnetic quantum phase transitions in ${TlCuCl}_{3}$
journal, February 2004

Anisotropic Cascade of Field-Induced Phase Transitions in the Frustrated Spin-Ladder System ${BiCu}_{2} {PO}_{6}$
journal, October 2012

Spectral Properties of Magnetic Excitations in Cuprate Two-Leg Ladder Systems
journal, October 2005

One- and Two-Triplon Spectra of a Cuprate Ladder
journal, January 2007

Spectral and Thermodynamic Properties of a Strong-Leg Quantum Spin Ladder
journal, April 2012

Decay of quasiparticles in quantum spin liquids
journal, March 2006

Triplet Waves in a Quantum Spin Liquid
journal, May 2000

Frustration-induced two-dimensional quantum disordered phase in piperazinium hexachlorodicuprate
journal, September 2001

Incommensurate dynamic correlations in the quasi-two-dimensional spin liquid BiCu $_{2}$ PO $_{6}$
journal, July 2013

Bose-Einstein Condensation in Magnetic Insulators
text, January 2007

Fano resonances in nanoscale structures
text, January 2009

Spectral and thermodynamic properties of a strong-leg quantum spin ladder
text, January 2011

Frustration-Induced Two Dimensional Quantum Disordered Phase in Piperazinium Hexachlorodicuprate
text, January 2001

Field- and pressure-induced magnetic quantum phase transitions in TlCuCl_3
text, January 2003

Spectral Properties of Magnetic Excitations in Cuprate Two-Leg Ladder Systems
text, January 2005

Quasiparticle breakdown in a quantum spin liquid
text, January 2005

Giant suppression of phononic heat transport in a quantum magnet BiCu2PO6
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Minimal model for the frustrated spin ladder system ${BiCu}_{2} {PO}_{6}$
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Magnetic phase diagram of a frustrated spin ladder
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Triplet excitations in the frustrated spin ladder ${Li}_{2} {Cu}_{2} O {({SO}_{4})}_{2}$
journal, February 2019

Field-induced decays in XXZ triangular-lattice antiferromagnets
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Avoided quasiparticle decay from strong quantum interactions
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Absence of localized edge modes in spite of a non-trivial Zak phase in ${BiCu}_{2} {PO}_{6}$
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