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 $γ - {Li}_{2} {IrO}_{3}$

Journal Article · Wed Jul 05 00:00:00 EDT 2017 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.96.020402· OSTI ID:1372316

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

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.

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

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

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

OSTI ID:: 1372316

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

Journal Information:: Physical Review B, Vol. 96, Issue 2; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 32 works

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References (32)

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Cited By (5)

Correlated states in β-Li2IrO3 driven by applied magnetic fields Ruiz, Alejandro; Frano, Alex; Breznay, Nicholas P. Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/s41467-017-01071-9	journal	October 2017
Lattice dynamics and structural transition of the hyperhoneycomb iridate $β - {Li}_{2} {IrO}_{3}$ investigated by high-pressure Raman scattering Choi, Sungkyun; Kim, Heung-Sik; Kim, Hun-Ho Physical Review B, Vol. 101, Issue 5 https://doi.org/10.1103/physrevb.101.054102	journal	February 2020
X-ray magnetic diffraction under high pressure Wang, Yishu; Rosenbaum, T. F.; Feng, Yejun IUCrJ, Vol. 6, Issue 4 https://doi.org/10.1107/s2052252519007061	journal	June 2019
Pressure-Tuned Interactions in Frustrated Magnets: Pathway to Quantum Spin Liquids? Biesner, Tobias; Uykur, Ece Crystals, Vol. 10, Issue 1 https://doi.org/10.3390/cryst10010004	journal	December 2019
Models and Materials for Generalized Kitaev Magnetism Winter, Stephen M.; Tsirlin, Alexander A.; Daghofer, Maria arXiv https://doi.org/10.48550/arxiv.1706.06113	text	January 2017

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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

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