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

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. In this paper, 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. Finally, RXS is a direct probe of electronic order, and we observe the abrupt disappearance of the q_sp = (0.57, 0, 0) spiral order at a critical pressure P_c = 1.4 GPa with no accompanying change in the symmetry of the lattice.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: Gordon and Betty Moore Foundation (United States); National Science Foundation (NSF) (United States); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

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

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

OSTI ID:: 1372316

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

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

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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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
Models and materials for generalized Kitaev magnetism Winter, Stephen M.; Tsirlin, Alexander A.; Daghofer, Maria Journal of Physics: Condensed Matter, Vol. 29, Issue 49 https://doi.org/10.1088/1361-648x/aa8cf5	journal	November 2017
Pressure-induced structural dimerization in the hyperhoneycomb iridate β − Li 2 IrO 3 at low temperatures Veiga, L. S. I.; Glazyrin, K.; Fabbris, G. Physical Review B, Vol. 100, Issue 6 https://doi.org/10.1103/physrevb.100.064104	journal	August 2019
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
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Magnetic structure and excitation spectrum of the hyperhoneycomb Kitaev magnet β − Li 2 IrO 3 Ducatman, Samuel; Rousochatzakis, Ioannis; Perkins, Natalia B. Physical Review B, Vol. 97, Issue 12 https://doi.org/10.1103/physrevb.97.125125	journal	March 2018
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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
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