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- Publisher Website: 10.1103/PhysRevLett.118.107202
- Scopus: eid_2-s2.0-85015077008
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Article: Crystalline Electric-Field Randomness in the Triangular Lattice Spin-Liquid YbMgGaO4
Title | Crystalline Electric-Field Randomness in the Triangular Lattice Spin-Liquid YbMgGaO4 |
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Authors | |
Issue Date | 2017 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ |
Citation | Physical Review Letters, 2017, v. 118 n. 10, article no. 107202 How to Cite? |
Abstract | © 2017 American Physical Society. We apply moderate-high-energy inelastic neutron scattering (INS) measurements to investigate Yb3+ crystalline electric field (CEF) levels in the triangular spin-liquid candidate YbMgGaO4. Three CEF excitations from the ground-state Kramers doublet are centered at the energies ω=39, 61, and 97 meV in agreement with the effective spin-1/2 g factors and experimental heat capacity, but reveal sizable broadening. We argue that this broadening originates from the site mixing between Mg2+ and Ga3+ giving rise to a distribution of Yb-O distances and orientations and, thus, of CEF parameters that account for the peculiar energy profile of the CEF excitations. The CEF randomness gives rise to a distribution of the effective spin-1/2 g factors and explains the unprecedented broadening of low-energy magnetic excitations in the fully polarized ferromagnetic phase of YbMgGaO4, although a distribution of magnetic couplings due to the Mg/Ga disorder may be important as well. |
Persistent Identifier | http://hdl.handle.net/10722/254472 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 3.040 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Li, Yuesheng | - |
dc.contributor.author | Adroja, Devashibhai | - |
dc.contributor.author | Bewley, Robert I. | - |
dc.contributor.author | Voneshen, David | - |
dc.contributor.author | Tsirlin, Alexander A. | - |
dc.contributor.author | Gegenwart, Philipp | - |
dc.contributor.author | Zhang, Qingming | - |
dc.date.accessioned | 2018-06-19T15:40:39Z | - |
dc.date.available | 2018-06-19T15:40:39Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Physical Review Letters, 2017, v. 118 n. 10, article no. 107202 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/254472 | - |
dc.description.abstract | © 2017 American Physical Society. We apply moderate-high-energy inelastic neutron scattering (INS) measurements to investigate Yb3+ crystalline electric field (CEF) levels in the triangular spin-liquid candidate YbMgGaO4. Three CEF excitations from the ground-state Kramers doublet are centered at the energies ω=39, 61, and 97 meV in agreement with the effective spin-1/2 g factors and experimental heat capacity, but reveal sizable broadening. We argue that this broadening originates from the site mixing between Mg2+ and Ga3+ giving rise to a distribution of Yb-O distances and orientations and, thus, of CEF parameters that account for the peculiar energy profile of the CEF excitations. The CEF randomness gives rise to a distribution of the effective spin-1/2 g factors and explains the unprecedented broadening of low-energy magnetic excitations in the fully polarized ferromagnetic phase of YbMgGaO4, although a distribution of magnetic couplings due to the Mg/Ga disorder may be important as well. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.title | Crystalline Electric-Field Randomness in the Triangular Lattice Spin-Liquid YbMgGaO4 | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevLett.118.107202 | - |
dc.identifier.scopus | eid_2-s2.0-85015077008 | - |
dc.identifier.volume | 118 | - |
dc.identifier.issue | 10 | - |
dc.identifier.spage | article no. 107202 | - |
dc.identifier.epage | article no. 107202 | - |
dc.identifier.eissn | 1079-7114 | - |
dc.identifier.isi | WOS:000396046800015 | - |
dc.identifier.issnl | 0031-9007 | - |