Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate γ-Li2IrO3

Breznay, Nicholas P.; Ruiz, Alejandro; Frano, Alex; Bi, Wenli; Birgeneau, Robert J.; Haskel, Daniel; Analytis, James G.

doi:10.1103/PhysRevB.96.020402

Title: Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate $γ - {Li}_{2} {IrO}_{3}$

Abstract

Honeycomb iridates such as γ-Li₂IrO₃ are argued to realize Kitaev spin-anisotropic magnetic exchange, along with Heisenberg and possibly other couplings. While systems with pure Kitaev interactions are candidates to realize a quantum spin-liquid ground state, in γ-Li₂IrO₃ it has been shown that the presence of competing magnetic interactions leads to an incommensurate spiral spin order at ambient pressure below 38 K. We study the pressure sensitivity of this magnetically ordered state in single crystals of γ-Li₂IrO₃ using resonant x-ray scattering (RXS) under applied hydrostatic pressures of up to 3 GPa. RXS is a direct probe of electronic order, and we observe the abrupt disappearance of the qsp=(0.57,0,0) spiral order at a critical pressure Pc=1.4 GPa with no accompanying change in the symmetry of the lattice.

Authors:

Breznay, Nicholas P. ^[1]; Ruiz, Alejandro ^[1]; Frano, Alex ^[2]; Bi, Wenli ^[3]; Birgeneau, Robert J. ^[4]; Haskel, Daniel ^[5]; Analytis, James G. ^[1]

Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source; Univ. of Illinois, Urbana, IL (United States). Dept. of Geology
Univ. of California, Berkeley, CA (United States). Dept. of Physics
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source

Publication Date:: 2017-07-05

Research Org.:: Univ. of California, Berkeley, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation (United States); National Science Foundation (NSF)

Contributing Org.:: Univ. of Illinois, Urbana, IL (United States)

OSTI Identifier:: 1372316

Alternate Identifier(s):: OSTI ID: 1368419; OSTI ID: 1466704

Grant/Contract Number:: SC0014039; AC02-06CH11357; GBMF4374; EAR-1606856; AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 96; Journal Issue: 2; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; frustrated magnetism; magnetic phase transitions; magnetic insulators; x-ray resonant magnetic scattering; condensed matter and materials physics

Citation Formats


                    Breznay, Nicholas P., Ruiz, Alejandro, Frano, Alex, Bi, Wenli, Birgeneau, Robert J., Haskel, Daniel, and Analytis, James G.. Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate γ-Li2IrO3.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevB.96.020402.

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                    Breznay, Nicholas P., Ruiz, Alejandro, Frano, Alex, Bi, Wenli, Birgeneau, Robert J., Haskel, Daniel, & Analytis, James G.. Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate γ-Li2IrO3.  United States.  https://doi.org/10.1103/PhysRevB.96.020402

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                    Breznay, Nicholas P., Ruiz, Alejandro, Frano, Alex, Bi, Wenli, Birgeneau, Robert J., Haskel, Daniel, and Analytis, James G.. Wed .  
"Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate γ-Li2IrO3".  United States.  https://doi.org/10.1103/PhysRevB.96.020402.  https://www.osti.gov/servlets/purl/1372316.

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@article{osti_1372316,

  title        = {Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate γ-Li2IrO3},

  author       = {Breznay, Nicholas P. and Ruiz, Alejandro and Frano, Alex and Bi, Wenli and Birgeneau, Robert J. and Haskel, Daniel and Analytis, James G.},

  abstractNote = {Honeycomb iridates such as γ-Li2IrO3 are argued to realize Kitaev spin-anisotropic magnetic exchange, along with Heisenberg and possibly other couplings. While systems with pure Kitaev interactions are candidates to realize a quantum spin-liquid ground state, in γ-Li2IrO3 it has been shown that the presence of competing magnetic interactions leads to an incommensurate spiral spin order at ambient pressure below 38 K. We study the pressure sensitivity of this magnetically ordered state in single crystals of γ-Li2IrO3 using resonant x-ray scattering (RXS) under applied hydrostatic pressures of up to 3 GPa. RXS is a direct probe of electronic order, and we observe the abrupt disappearance of the qsp=(0.57,0,0) spiral order at a critical pressure Pc=1.4 GPa with no accompanying change in the symmetry of the lattice.},

  doi          = {10.1103/PhysRevB.96.020402},

  journal      = {Physical Review B},

  number       = 2,

  volume       = 96,

  place        = {United States},

  year         = {2017},

  month        = {7}

}

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Correlated states in β-Li2IrO3 driven by applied magnetic fields
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Ruiz, Alejandro; Frano, Alex; Breznay, Nicholas P.
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Title: Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate γ - Li 2 IrO 3

Abstract

Citation Formats

Zigzag Magnetic Order in the Iridium Oxide Na 2 IrO 3 journal, February 2013

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Challenges in design of Kitaev materials: Magnetic interactions from competing energy scales journal, June 2016

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Invited Article: High-pressure techniques for condensed matter physics at low temperature journal, April 2010

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Revealing frustrated local moment model for pressurized hyperhoneycomb iridate: Paving the way toward a quantum spin liquid journal, December 2016

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

Equations of State for Cu, Ag, and Au for Wide Ranges in Temperature and Pressure up to 500 GPa and Above journal, March 2001

Pressure Tuning of the Spin-Orbit Coupled Ground State in Sr 2 IrO 4 journal, July 2012

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Spin-Orbit Coupling in Iridium-Based 5d Compounds Probed by X-ray Absorption Spectroscopy text, January 2012

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Theory of Magnetic Phase Diagrams in Hyperhoneycomb and Harmonic-honeycomb Iridates text, January 2014

Challenges in Design of Kitaev Materials: Magnetic Interactions from Competing Energy Scales text, January 2016

Anyons in an exactly solved model and beyond text, January 2005

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

Lattice dynamics and structural transition of the hyperhoneycomb iridate β − Li 2 IrO 3 investigated by high-pressure Raman scattering journal, February 2020

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Title: Resonant x-ray scattering reveals possible disappearance of magnetic order under hydrostatic pressure in the Kitaev candidate $γ - {Li}_{2} {IrO}_{3}$

Zigzag Magnetic Order in the Iridium Oxide ${Na}_{2} {IrO}_{3}$
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Anyons in an exactly solved model and beyond
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Challenges in design of Kitaev materials: Magnetic interactions from competing energy scales
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Theory of magnetic phase diagrams in hyperhoneycomb and harmonic-honeycomb iridates
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Theory of Magnetic Phase Diagrams in Hyperhoneycomb and Harmonic-honeycomb Iridates
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