Pressure-driven collapse of the relativistic electronic ground state in a honeycomb
dc.bibliographicCitation.firstPage | 35 | eng |
dc.bibliographicCitation.issue | 1 | eng |
dc.bibliographicCitation.journalTitle | npj Quantum Materials | eng |
dc.bibliographicCitation.lastPage | 208 | eng |
dc.bibliographicCitation.volume | 3 | eng |
dc.contributor.author | Clancy, J.P. | |
dc.contributor.author | Gretarsson, H. | |
dc.contributor.author | Sears, J.A. | |
dc.contributor.author | Singh, Y. | |
dc.contributor.author | Desgreniers, S. | |
dc.contributor.author | Mehlawat, K. | |
dc.contributor.author | Layek, S. | |
dc.contributor.author | Rozenberg, G.K. | |
dc.contributor.author | Ding, Y. | |
dc.contributor.author | Upton, M.H. | |
dc.contributor.author | Casa, D. | |
dc.contributor.author | Chen, N. | |
dc.contributor.author | Im, J. | |
dc.contributor.author | Lee, Y. | |
dc.contributor.author | Yadav, R. | |
dc.contributor.author | Hozoi, L. | |
dc.contributor.author | Efremov, D. | |
dc.contributor.author | Van Den Brink, J. | |
dc.contributor.author | Kim, Y.-J. | |
dc.date.accessioned | 2020-07-20T06:05:19Z | |
dc.date.available | 2020-07-20T06:05:19Z | |
dc.date.issued | 2018 | |
dc.description.abstract | Honeycomb-lattice quantum magnets with strong spin-orbit coupling are promising candidates for realizing a Kitaev quantum spin liquid. Although iridate materials such as Li2IrO3 and Na2IrO3 have been extensively investigated in this context, there is still considerable debate as to whether a localized relativistic wavefunction (J eff = 1/2) provides a suitable description for the electronic ground state of these materials. To address this question, we have studied the evolution of the structural and electronic properties of α-Li2IrO3 as a function of applied hydrostatic pressure using a combination of X-ray diffraction and X-ray spectroscopy techniques. We observe striking changes even under the application of only small hydrostatic pressure (P ≤ 0.1 GPa): A distortion of the Ir honeycomb lattice (via X-ray diffraction), a dramatic decrease in the strength of spin-orbit coupling effects (via X-ray absorption spectroscopy), and a significant increase in non-cubic crystal electric field splitting (via resonant inelastic X-ray scattering). Our data indicate that α-Li2IrO3 is best described by a J eff = 1/2 state at ambient pressure, but demonstrate that this state is extremely fragile and collapses under the influence of applied pressure. | eng |
dc.description.fonds | Leibniz_Fonds | |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://doi.org/10.34657/3672 | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/5043 | |
dc.language.iso | eng | eng |
dc.publisher | London : Nature Publishing Group | eng |
dc.relation.doi | https://doi.org/10.1038/s41535-018-0109-0 | |
dc.relation.issn | 2397-4648 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 530 | eng |
dc.subject.other | Kitaev quantum spin liquid | eng |
dc.subject.other | Honeycomb-lattice quantum magnets | eng |
dc.subject.other | spin-orbit coupling | eng |
dc.title | Pressure-driven collapse of the relativistic electronic ground state in a honeycomb | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IFWD | eng |
wgl.subject | Physik | eng |
wgl.type | Zeitschriftenartikel | eng |
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