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Gapless quantum spin liquid ground state in the two-dimensional spin-1/2 triangular antiferromagnet YbMgGaO4
Open accessAbstract
Quantum spin liquid (QSL) is a novel state of matter which refuses the conventional spin freezing even at 0 K. Experimentally searching for the structurally perfect candidates is a big challenge in condensed matter physics. Here we report the successful synthesis of a new spin-1/2 triangular antiferromagnet YbMgGaO 4 with "Equation missing" sy m metry. The compound with an ideal two-dimensional and spatial isotropic magnetic triangular-lattice has no site-mixing magnetic defects and no antisymmetric Dzyaloshinsky-Moriya (DM) interactions. No spin freezing down to 60 mK (despite θ w ~ −4 K), the power-law temperature dependence of heat capacity and nonzero susceptibility at low temperatures suggest that YbMgGaO 4 is a promising gapless (≤|θ w|/100) QSL candidate. The residual spin entropy, which is accurately determined with a non-magnetic reference LuMgGaO 4, approaches zero (<0.6%). This indicates that the possible QSL ground state (GS) of the frustrated spin system has been experimentally achieved at the lowest measurement temperatures.
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Citations
Cites
Spin liquids in frustrated magnets
Balents, L. (2010) · Nature · doi:10.1038/nature08917 · Cited by 4,316
New Mechanism of Anisotropic Superexchange Interaction
Moriya, T. (1960) · Physical Review Letters · doi:10.1103/physrevlett.4.228 · Cited by 1,364
Cited by
Continuous excitations of the triangular-lattice quantum spin liquid YbMgGaO4
Paddison, J. A. M., Daum, M., Dun, Z., Ehlers, G., Liu, Y., Stone, M. B., Zhou, H., & Mourigal, M. (2017) · Nature Physics · doi:10.1038/nphys3971 · Cited by 423
Metadata
- Authors
- Li, Y., Liao, H., Zhang, Z., Li, S., Jin, F., Ling, L., Zhang, L., Zou, Y., Pi, L., Yang, Z., Wang, J., Wu, Z., & Zhang, Q.
- Venue
- Scientific Reports
- Published
- 2015-11-10
- Volume
- 5
- Issue
- 1
- Pages
- 16419-16419
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W3105052732
- Cited by
- 337
- References
- 2
- FWCI
- 9.75
- Type
- journal article
- Language
- en
- Open access
- gold
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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