Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals
We report thermodynamic measurements of the S=1/2 kagome lattice antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2], a promising candidate system with a spin-liquid ground state. Using single crystal samples, the magnetic susceptibility both perpendicular and parallel to the kagome pl...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/71622 https://orcid.org/0000-0002-7022-8313 |
| _version_ | 1826201835350786048 |
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| author | Han, Tianheng Chu, Shaoyan Lee, Young S. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Han, Tianheng Chu, Shaoyan Lee, Young S. |
| author_sort | Han, Tianheng |
| collection | MIT |
| description | We report thermodynamic measurements of the S=1/2 kagome lattice antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2], a promising candidate system with a spin-liquid ground state. Using single crystal samples, the magnetic susceptibility both perpendicular and parallel to the kagome plane has been measured. A small, temperature-dependent anisotropy has been observed, where χ[subscript z]/χ[subscript p]>1 at high temperatures and χ[subscript z]/χ[subscript p]<1 at low temperatures. Fits of the high-temperature data to a Curie-Weiss model also reveal an anisotropy. By comparing with theoretical calculations, the presence of a small easy-axis exchange anisotropy can be deduced as the primary perturbation to the dominant Heisenberg nearest neighbor interaction. These results have great bearing on the interpretation of theoretical calculations based on the kagome Heisenberg antiferromagnet model to the experiments on ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2]. |
| first_indexed | 2024-09-23T11:57:57Z |
| format | Article |
| id | mit-1721.1/71622 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:57:57Z |
| publishDate | 2012 |
| publisher | American Physical Society |
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| spelling | mit-1721.1/716222022-09-27T23:06:40Z Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals Han, Tianheng Chu, Shaoyan Lee, Young S. Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Physics Lee, Young S. Han, Tianheng Chu, Shaoyan Lee, Young S. We report thermodynamic measurements of the S=1/2 kagome lattice antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2], a promising candidate system with a spin-liquid ground state. Using single crystal samples, the magnetic susceptibility both perpendicular and parallel to the kagome plane has been measured. A small, temperature-dependent anisotropy has been observed, where χ[subscript z]/χ[subscript p]>1 at high temperatures and χ[subscript z]/χ[subscript p]<1 at low temperatures. Fits of the high-temperature data to a Curie-Weiss model also reveal an anisotropy. By comparing with theoretical calculations, the presence of a small easy-axis exchange anisotropy can be deduced as the primary perturbation to the dominant Heisenberg nearest neighbor interaction. These results have great bearing on the interpretation of theoretical calculations based on the kagome Heisenberg antiferromagnet model to the experiments on ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2]. United States. Dept. of Energy (Grant No. DE-FG02-07ER46134) 2012-07-13T17:47:36Z 2012-07-13T17:47:36Z 2012-04 2011-12 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/71622 Han, Tianheng, Shaoyan Chu, and Young Lee. “Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_{3}(OH)_{6}Cl_{2} Using Single Crystals.” Physical Review Letters 108.15 (2012). © 2012 American Physical Society https://orcid.org/0000-0002-7022-8313 en_US http://dx.doi.org/10.1103/PhysRevLett.108.157202 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Han, Tianheng Chu, Shaoyan Lee, Young S. Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals |
| title | Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals |
| title_full | Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals |
| title_fullStr | Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals |
| title_full_unstemmed | Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals |
| title_short | Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] Using Single Crystals |
| title_sort | refining the spin hamiltonian in the spin 1 2 kagome lattice antiferromagnet zncu subscript 3 oh subscript 6 cl subscript 2 using single crystals |
| url | http://hdl.handle.net/1721.1/71622 https://orcid.org/0000-0002-7022-8313 |
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