Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite
We report a direct measurement of the low-frequency optical conductivity of large-area single-crystal herbertsmithite, a promising spin-liquid candidate material, by means of terahertz time-domain spectroscopy. In the spectral range below 1.4 THz, we observe a contribution to the real part of the in...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/84975 https://orcid.org/0000-0002-2257-9944 https://orcid.org/0000-0002-6394-4987 https://orcid.org/0000-0002-7406-5283 https://orcid.org/0000-0002-7022-8313 |
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| author | Han, Tianheng Shrekenhamer, D. Padilla, W. J. Pilon, Daniel Victor Lui, Chun Hung Frenzel, Alex James Lee, Young S. Gedik, Nuh |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Han, Tianheng Shrekenhamer, D. Padilla, W. J. Pilon, Daniel Victor Lui, Chun Hung Frenzel, Alex James Lee, Young S. Gedik, Nuh |
| author_sort | Han, Tianheng |
| collection | MIT |
| description | We report a direct measurement of the low-frequency optical conductivity of large-area single-crystal herbertsmithite, a promising spin-liquid candidate material, by means of terahertz time-domain spectroscopy. In the spectral range below 1.4 THz, we observe a contribution to the real part of the in-plane conductivity σ[subscript ab](ω) from the spin degree of freedom. This spin-induced conductivity exhibits a power-law dependence on frequency σ[subscript ab](ω) ~ ω[superscript β] with β ≈ 1.4. Our observation is consistent with the theoretically predicted low-frequency conductivity arising from an emergent gauge field of a gapless U(1) Dirac spin liquid. |
| first_indexed | 2024-09-23T12:35:50Z |
| format | Article |
| id | mit-1721.1/84975 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:35:50Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/849752022-10-01T09:58:02Z Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite Han, Tianheng Shrekenhamer, D. Padilla, W. J. Pilon, Daniel Victor Lui, Chun Hung Frenzel, Alex James Lee, Young S. Gedik, Nuh Massachusetts Institute of Technology. Department of Physics Pilon, Daniel Victor Lui, Chun Hung Frenzel, Alex James Lee, Young S. Gedik, Nuh We report a direct measurement of the low-frequency optical conductivity of large-area single-crystal herbertsmithite, a promising spin-liquid candidate material, by means of terahertz time-domain spectroscopy. In the spectral range below 1.4 THz, we observe a contribution to the real part of the in-plane conductivity σ[subscript ab](ω) from the spin degree of freedom. This spin-induced conductivity exhibits a power-law dependence on frequency σ[subscript ab](ω) ~ ω[superscript β] with β ≈ 1.4. Our observation is consistent with the theoretically predicted low-frequency conductivity arising from an emergent gauge field of a gapless U(1) Dirac spin liquid. United States. Dept. of Energy. Office of Basic Energy Sciences (Division of Materials Sciences and Engineering Grant DE-FG02-08ER46521) United States. Dept. of Energy. Office of Basic Energy Sciences (Division of Materials Sciences and Engineering Grant DE-SC0006423) United States. Dept. of Energy. Office of Basic Energy Sciences (Division of Materials Sciences and Engineering Grant DE-FG02-07ER46134) 2014-02-18T15:51:33Z 2014-02-18T15:51:33Z 2013-09 2013-04 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/84975 Pilon, D. V. et al. “Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite.” Physical Review Letters 111.12 (2013): n. pag. © 2013 American Physical Society https://orcid.org/0000-0002-2257-9944 https://orcid.org/0000-0002-6394-4987 https://orcid.org/0000-0002-7406-5283 https://orcid.org/0000-0002-7022-8313 en_US http://dx.doi.org/10.1103/PhysRevLett.111.127401 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 American Physical Society |
| spellingShingle | Han, Tianheng Shrekenhamer, D. Padilla, W. J. Pilon, Daniel Victor Lui, Chun Hung Frenzel, Alex James Lee, Young S. Gedik, Nuh Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite |
| title | Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite |
| title_full | Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite |
| title_fullStr | Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite |
| title_full_unstemmed | Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite |
| title_short | Spin-Induced Optical Conductivity in the Spin-Liquid Candidate Herbertsmithite |
| title_sort | spin induced optical conductivity in the spin liquid candidate herbertsmithite |
| url | http://hdl.handle.net/1721.1/84975 https://orcid.org/0000-0002-2257-9944 https://orcid.org/0000-0002-6394-4987 https://orcid.org/0000-0002-7406-5283 https://orcid.org/0000-0002-7022-8313 |
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