Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet β − Li 2 Ir O 3

Li, Mengqun; Rousochatzakis, Ioannis; Perkins, Natalia B.

doi:10.1103/PhysRevResearch.2.033328

Title: Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet $β − {Li}_{2} {Ir O}_{3}$

Abstract

We present a theoretical study of the response of β-Li2IrO3 under external magnetic fields in the ab, bc, and ac crystallographic planes. The results are based on the minimal nearest-neighbor J-K-Γ model and reveal a rich intertwining of field-induced phases and magnetic phase transitions with distinctive signatures that can be probed directly via torque magnetometry. Most saliently, we observe (i) an unusual reentrance of the incommensurate counterrotating order for fields in the ab plane and (ii) a set of abrupt torque discontinuities which are particularly large for fields rotating in the bc plane and whose characteristic shape resembles closely the ones observed in the three-dimensional (3D) Kitaev magnet γ-Li2IrO3. An experimental confirmation of these predictions will pave the way for an accurate determination of all relevant microscopic parameters of this 3D Kitaev magnet.

Authors:

Li, Mengqun;

;

Publication Date:: Fri Aug 28 00:00:00 EDT 2020

Research Org.:: Univ. of Minnesota, Minneapolis, MN (United States)

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

OSTI Identifier:: 1651237

Alternate Identifier(s):: OSTI ID: 1660778; OSTI ID: 1764399

Grant/Contract Number:: SC0018056

Resource Type:: Published Article

Journal Name:: Physical Review Research

Additional Journal Information:: Journal Name: Physical Review Research Journal Volume: 2 Journal Issue: 3; Journal ID: ISSN 2643-1564

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Magnetism; spin dynamics

Citation Formats


                    Li, Mengqun, Rousochatzakis, Ioannis, and Perkins, Natalia B. Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet β − Li 2 Ir O 3.  United States: N. p., 2020. 
Web.  doi:10.1103/PhysRevResearch.2.033328.

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                    Li, Mengqun, Rousochatzakis, Ioannis, & Perkins, Natalia B. Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet β − Li 2 Ir O 3.  United States.  https://doi.org/10.1103/PhysRevResearch.2.033328

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                    Li, Mengqun, Rousochatzakis, Ioannis, and Perkins, Natalia B. Fri .  
"Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet β − Li 2 Ir O 3".  United States.  https://doi.org/10.1103/PhysRevResearch.2.033328.

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@article{osti_1651237,

  title        = {Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet β − Li 2 Ir O 3},

  author       = {Li, Mengqun and Rousochatzakis, Ioannis and Perkins, Natalia B.},

  abstractNote = {We present a theoretical study of the response of β-Li2IrO3 under external magnetic fields in the ab, bc, and ac crystallographic planes. The results are based on the minimal nearest-neighbor J-K-Γ model and reveal a rich intertwining of field-induced phases and magnetic phase transitions with distinctive signatures that can be probed directly via torque magnetometry. Most saliently, we observe (i) an unusual reentrance of the incommensurate counterrotating order for fields in the ab plane and (ii) a set of abrupt torque discontinuities which are particularly large for fields rotating in the bc plane and whose characteristic shape resembles closely the ones observed in the three-dimensional (3D) Kitaev magnet γ-Li2IrO3. An experimental confirmation of these predictions will pave the way for an accurate determination of all relevant microscopic parameters of this 3D Kitaev magnet.},

  doi          = {10.1103/PhysRevResearch.2.033328},

  journal      = {Physical Review Research},

  number       = 3,

  volume       = 2,

  place        = {United States},

  year         = {Fri Aug 28 00:00:00 EDT 2020},

  month        = {Fri Aug 28 00:00:00 EDT 2020}

}

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Title: Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet β − Li 2 Ir O 3

Abstract

Citation Formats

Field-induced quantum criticality in the Kitaev system α − RuCl 3 journal, July 2017

Magnetic field induced quantum phases in a tensor network study of Kitaev magnets journal, April 2020

Anyons in an exactly solved model and beyond journal, January 2006

Concept and realization of Kitaev quantum spin liquids journal, March 2019

Spin-Orbit Physics Giving Rise to Novel Phases in Correlated Systems: Iridates and Related Materials journal, March 2016

Magnetic anisotropy of the alkali iridate Na 2 IrO 3 at high magnetic fields: Evidence for strong ferromagnetic Kitaev correlations journal, February 2019

Néel-type antiferromagnetic order and magnetic field–temperature phase diagram in the spin- 1 2 rare-earth honeycomb compound YbCl 3 journal, July 2020

Heisenberg–Kitaev physics in magnetic fields journal, July 2019

Kitaev-Heisenberg model in a magnetic field: Order-by-disorder and commensurate-incommensurate transitions journal, April 2017

Phase diagram of α − RuCl 3 in an in-plane magnetic field journal, May 2017

Anisotropic temperature-field phase diagram of single crystalline β − Li 2 IrO 3 : Magnetization, specific heat, and Li 7 NMR study journal, July 2019

Physics of the Kitaev Model: Fractionalization, Dynamic Correlations, and Material Connections journal, March 2018

Field evolution of low-energy excitations in the hyperhoneycomb magnet β − Li 2 IrO 3 journal, June 2020

Neutron scattering in the proximate quantum spin liquid α-RuCl 3 journal, June 2017

Magnetic structure and excitation spectrum of the hyperhoneycomb Kitaev magnet β − Li 2 IrO 3 journal, March 2018

Hyperhoneycomb Iridate β − Li 2 IrO 3 as a Platform for Kitaev Magnetism journal, February 2015

Unconventional magnetic order on the hyperhoneycomb Kitaev lattice in β − Li 2 IrO 3 : Full solution via magnetic resonant x-ray diffraction journal, November 2014

Robust spin correlations at high magnetic fields in the harmonic honeycomb iridates journal, August 2017

Models and materials for generalized Kitaev magnetism journal, November 2017

Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid journal, July 2018

Unconventional magnetic field response of the hyperhoneycomb Kitaev magnet β − Li 2 IrO 3 journal, January 2020

Hunting Majorana Fermions in Kitaev Magnets journal, January 2020

Evidence for a Field-Induced Quantum Spin Liquid in α - RuCl 3 journal, July 2017

Resonant torsion magnetometry in anisotropic quantum materials journal, September 2018

Chiral spin order in some purported Kitaev spin-liquid compounds journal, November 2018

Theory of magnetic phase diagrams in hyperhoneycomb and harmonic-honeycomb iridates journal, February 2015

Gapless Spin Excitations in the Field-Induced Quantum Spin Liquid Phase of α − RuCl 3 journal, December 2017

Sawtooth Torque in Anisotropic j eff = 1 / 2 Magnets: Application to α − RuCl 3 journal, May 2019

Anomalous Thermal Conductivity and Magnetic Torque Response in the Honeycomb Magnet α − RuCl 3 journal, May 2017

Monte Carlo Simulation in Statistical Physics journal, January 1993

Correlated states in β-Li2IrO3 driven by applied magnetic fields journal, October 2017

Two iridates, two models, and two approaches: A comparative study on magnetism in three-dimensional honeycomb materials journal, May 2016

Materials design of Kitaev spin liquids beyond the Jackeli–Khaliullin mechanism journal, June 2020

Kitaev-Heisenberg Model on a Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides A 2 IrO 3 journal, July 2010

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High-temperature magnetic anomaly in the Kitaev hyperhoneycomb compound β − Li 2 IrO 3 journal, February 2020

Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models journal, January 2009

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Title: Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet $β − {Li}_{2} {Ir O}_{3}$

Field-induced quantum criticality in the Kitaev system $α - {RuCl}_{3}$
journal, July 2017

Magnetic field induced quantum phases in a tensor network study of Kitaev magnets
journal, April 2020

Anyons in an exactly solved model and beyond
journal, January 2006

Concept and realization of Kitaev quantum spin liquids
journal, March 2019

Spin-Orbit Physics Giving Rise to Novel Phases in Correlated Systems: Iridates and Related Materials
journal, March 2016

Magnetic anisotropy of the alkali iridate ${Na}_{2} {IrO}_{3}$ at high magnetic fields: Evidence for strong ferromagnetic Kitaev correlations
journal, February 2019

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journal, July 2020

Heisenberg–Kitaev physics in magnetic fields
journal, July 2019

Kitaev-Heisenberg model in a magnetic field: Order-by-disorder and commensurate-incommensurate transitions
journal, April 2017

Phase diagram of $α - {RuCl}_{3}$ in an in-plane magnetic field
journal, May 2017

Anisotropic temperature-field phase diagram of single crystalline $β - {Li}_{2} {IrO}_{3}$ : Magnetization, specific heat, and ${}^{7}{Li}$ NMR study
journal, July 2019

Physics of the Kitaev Model: Fractionalization, Dynamic Correlations, and Material Connections
journal, March 2018

Field evolution of low-energy excitations in the hyperhoneycomb magnet $β - {Li}_{2} {IrO}_{3}$
journal, June 2020

Neutron scattering in the proximate quantum spin liquid α-RuCl ₃
journal, June 2017

Magnetic structure and excitation spectrum of the hyperhoneycomb Kitaev magnet $β − {Li}_{2} {IrO}_{3}$
journal, March 2018

Hyperhoneycomb Iridate $β − {Li}_{2} {IrO}_{3}$ as a Platform for Kitaev Magnetism
journal, February 2015

Unconventional magnetic order on the hyperhoneycomb Kitaev lattice in $β − {Li}_{2} {IrO}_{3}$ : Full solution via magnetic resonant x-ray diffraction
journal, November 2014

Robust spin correlations at high magnetic fields in the harmonic honeycomb iridates
journal, August 2017

Models and materials for generalized Kitaev magnetism
journal, November 2017

Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid
journal, July 2018

Unconventional magnetic field response of the hyperhoneycomb Kitaev magnet $β - {Li}_{2} {IrO}_{3}$
journal, January 2020

Hunting Majorana Fermions in Kitaev Magnets
journal, January 2020

Evidence for a Field-Induced Quantum Spin Liquid in $α$ - ${RuCl}_{3}$
journal, July 2017

Resonant torsion magnetometry in anisotropic quantum materials
journal, September 2018

Chiral spin order in some purported Kitaev spin-liquid compounds
journal, November 2018

Theory of magnetic phase diagrams in hyperhoneycomb and harmonic-honeycomb iridates
journal, February 2015

Gapless Spin Excitations in the Field-Induced Quantum Spin Liquid Phase of $α − {RuCl}_{3}$
journal, December 2017

Sawtooth Torque in Anisotropic j eff = 1 / 2 Magnets: Application to α − RuCl 3
journal, May 2019

Anomalous Thermal Conductivity and Magnetic Torque Response in the Honeycomb Magnet $α − {RuCl}_{3}$
journal, May 2017

Monte Carlo Simulation in Statistical Physics
journal, January 1993

Correlated states in β-Li2IrO3 driven by applied magnetic fields
journal, October 2017

Two iridates, two models, and two approaches: A comparative study on magnetism in three-dimensional honeycomb materials
journal, May 2016

Materials design of Kitaev spin liquids beyond the Jackeli–Khaliullin mechanism
journal, June 2020

Kitaev-Heisenberg Model on a Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides $A_{2} {IrO}_{3}$
journal, July 2010

Realization of a three-dimensional spin–anisotropic harmonic honeycomb iridate
journal, June 2014

High-temperature magnetic anomaly in the Kitaev hyperhoneycomb compound $β − {Li}_{2} {IrO}_{3}$
journal, February 2020

Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
journal, January 2009

Magnetic field induced evolution of intertwined orders in the Kitaev magnet $β − {Li}_{2} {IrO}_{3}$
journal, May 2018

Honeycomb-Lattice Heisenberg-Kitaev Model in a Magnetic Field: Spin Canting, Metamagnetism, and Vortex Crystals
journal, December 2016

Heisenberg-Kitaev models on hyperhoneycomb and stripy-honeycomb lattices: 3D-2D equivalence of ordered states and phase diagrams
journal, January 2020