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Description:

The molecular triangular lattice system, β’-EtMe3Sb[Pd(dmit)2]2, is considered as a candidate material for the quantum spin liquid (QSL) state, although ongoing debates arise from recent con- troversial results. Here, the results of electron spin resonance (ESR) and muon spin relaxation (μSR) measurements on β’-EtMe3Sb[Pd(dmit)2]2 are presented. Both results indicate characteristic behav- iors related to quasi-one-dimensional (q1D) spin dynamics, whereas the direction of anisotropy found in ESR is in contradiction with previous theories. We succeed in interpreting the experiments by combining density-functional theory calculations and analysis of the effective model taking into ac- count the multi-orbital nature of the system. While the QSL-like origin of β’-EtMe3Sb[Pd(dmit)2]2 was initially attributed to the magnetic frustration of the triangular lattice, it appears that the primary origin is a 1D spin liquid resulting from the dimensional reduction effect.

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• http://arxiv.org/licenses/nonexclusive-distrib/1.0/
  

Keyword: Molecular Triangular Lattice System, 1D spin liquid, electron spin resonance, muon-spin relaxation measurements, DFT, extended Hubbard model

Date published: 2024-12-03

Publisher: American Physical Society (APS)

Journal:

• Physical Review Letters (ISSN: 00319007) vol. 133 issue. 23 236702

Funding:

• Japan Society for the Promotion of Science JP20H04463
• Japan Society for the Promotion of Science 23H01129
• Japan Society for the Promotion of Science 23H04047
• Japan Society for the Promotion of Science 23K03333
• Science and Technology Facilities Council

Manuscript type: Author's version (Accepted manuscript)

MDR DOI:

First published URL: https://doi.org/10.1103/physrevlett.133.236702

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Updated at: 2024-12-06 17:17:56 +0900

Published on MDR: 2024-12-06 17:17:56 +0900