Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4}
We report on low-temperature heat-transport properties of the spin-1/2 triangular-lattice antiferromagnet Cs_{2}CuCl_{4}. Broad maxima in the thermal conductivity along the three principal axes, observed at about 5 K, are interpreted in terms of the Debye model, including the phonon umklapp scatteri...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2019-11-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.1.032022 |
| _version_ | 1797211669908160512 |
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| author | E. Schulze S. Arsenijevic L. Opherden A. N. Ponomaryov J. Wosnitza T. Ono H. Tanaka S. A. Zvyagin |
| author_facet | E. Schulze S. Arsenijevic L. Opherden A. N. Ponomaryov J. Wosnitza T. Ono H. Tanaka S. A. Zvyagin |
| author_sort | E. Schulze |
| collection | DOAJ |
| description | We report on low-temperature heat-transport properties of the spin-1/2 triangular-lattice antiferromagnet Cs_{2}CuCl_{4}. Broad maxima in the thermal conductivity along the three principal axes, observed at about 5 K, are interpreted in terms of the Debye model, including the phonon umklapp scattering. For thermal transport along the b axis, we found a pronounced field-dependent anomaly, close to the transition into the three-dimensional long-range-ordered state. No such anomalies were found for the transport along the a and c directions. We argue that this anisotropic behavior is related to an additional heat-transport channel through magnetic excitations, that can best propagate along the direction of the largest exchange interaction. In addition, peculiarities of the heat transport of Cs_{2}CuCl_{4} in magnetic fields up to the saturation field and above are discussed. |
| first_indexed | 2024-04-24T10:30:10Z |
| format | Article |
| id | doaj.art-5e329a82af33428796f6a78d67e18241 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:30:10Z |
| publishDate | 2019-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-5e329a82af33428796f6a78d67e182412024-04-12T16:47:04ZengAmerican Physical SocietyPhysical Review Research2643-15642019-11-011303202210.1103/PhysRevResearch.1.032022Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4}E. SchulzeS. ArsenijevicL. OpherdenA. N. PonomaryovJ. WosnitzaT. OnoH. TanakaS. A. ZvyaginWe report on low-temperature heat-transport properties of the spin-1/2 triangular-lattice antiferromagnet Cs_{2}CuCl_{4}. Broad maxima in the thermal conductivity along the three principal axes, observed at about 5 K, are interpreted in terms of the Debye model, including the phonon umklapp scattering. For thermal transport along the b axis, we found a pronounced field-dependent anomaly, close to the transition into the three-dimensional long-range-ordered state. No such anomalies were found for the transport along the a and c directions. We argue that this anisotropic behavior is related to an additional heat-transport channel through magnetic excitations, that can best propagate along the direction of the largest exchange interaction. In addition, peculiarities of the heat transport of Cs_{2}CuCl_{4} in magnetic fields up to the saturation field and above are discussed.http://doi.org/10.1103/PhysRevResearch.1.032022 |
| spellingShingle | E. Schulze S. Arsenijevic L. Opherden A. N. Ponomaryov J. Wosnitza T. Ono H. Tanaka S. A. Zvyagin Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4} Physical Review Research |
| title | Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4} |
| title_full | Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4} |
| title_fullStr | Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4} |
| title_full_unstemmed | Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4} |
| title_short | Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs_{2}CuCl_{4} |
| title_sort | evidence of one dimensional magnetic heat transport in the triangular lattice antiferromagnet cs 2 cucl 4 |
| url | http://doi.org/10.1103/PhysRevResearch.1.032022 |
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