Magneto-optical Faraday effect in spin-liquid candidates
We propose an experiment to use the magneto-optical Faraday effect to probe the dynamic Hall conductivity of spin-liquid candidates. Theory predicts that an external magnetic field will generate an internal gauge field. If the source of conductivity is in spinons with a Fermi surface, a finite Farad...
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| Format: | Article |
| Language: | English |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/89533 https://orcid.org/0000-0002-5883-787X https://orcid.org/0000-0001-7809-8157 |
| _version_ | 1811086238612979712 |
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| author | Drew, H. Dennis Lee, Patrick A. Colbert, Jacob Reid |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Drew, H. Dennis Lee, Patrick A. Colbert, Jacob Reid |
| author_sort | Drew, H. Dennis |
| collection | MIT |
| description | We propose an experiment to use the magneto-optical Faraday effect to probe the dynamic Hall conductivity of spin-liquid candidates. Theory predicts that an external magnetic field will generate an internal gauge field. If the source of conductivity is in spinons with a Fermi surface, a finite Faraday rotation angle is expected. We predict the angle to scale as the square of the frequency rather than display the standard cyclotron resonance pattern. Furthermore, the Faraday effect should be able to distinguish the ground state of the spin liquid, as we predict no rotation for massless Dirac spinons. We give a semiquantitative estimate for the magnitude of the effect and find that it should be experimentally feasible to detect in both κ-(ET)[subscript 2] Cu[subscript 2] (CN)[subscript 3] and, if the spinons form a Fermi surface, herbertsmithite. We also comment on the magneto-optical Kerr effect and show that the imaginary part of the Kerr angle (circular dichroism) may be measurable. |
| first_indexed | 2024-09-23T13:23:01Z |
| format | Article |
| id | mit-1721.1/89533 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:23:01Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/895332022-10-01T14:53:52Z Magneto-optical Faraday effect in spin-liquid candidates Drew, H. Dennis Lee, Patrick A. Colbert, Jacob Reid Massachusetts Institute of Technology. Department of Physics Colbert, Jacob Reid Lee, Patrick A. We propose an experiment to use the magneto-optical Faraday effect to probe the dynamic Hall conductivity of spin-liquid candidates. Theory predicts that an external magnetic field will generate an internal gauge field. If the source of conductivity is in spinons with a Fermi surface, a finite Faraday rotation angle is expected. We predict the angle to scale as the square of the frequency rather than display the standard cyclotron resonance pattern. Furthermore, the Faraday effect should be able to distinguish the ground state of the spin liquid, as we predict no rotation for massless Dirac spinons. We give a semiquantitative estimate for the magnitude of the effect and find that it should be experimentally feasible to detect in both κ-(ET)[subscript 2] Cu[subscript 2] (CN)[subscript 3] and, if the spinons form a Fermi surface, herbertsmithite. We also comment on the magneto-optical Kerr effect and show that the imaginary part of the Kerr angle (circular dichroism) may be measurable. National Science Foundation (U.S.) (Grant DMR-1104498) 2014-09-15T17:38:19Z 2014-09-15T17:38:19Z 2014-09 2014-08 2014-09-12T22:00:05Z Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/89533 Colbert, Jacob R., H. Dennis Drew, and Patrick A. Lee. “Magneto-Optical Faraday Effect in Spin-Liquid Candidates.” Phys. Rev. B 90, no. 12 (September 2014). © 2014 American Physical Society https://orcid.org/0000-0002-5883-787X https://orcid.org/0000-0001-7809-8157 en http://dx.doi.org/10.1103/PhysRevB.90.121105 Physical Review B 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. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Drew, H. Dennis Lee, Patrick A. Colbert, Jacob Reid Magneto-optical Faraday effect in spin-liquid candidates |
| title | Magneto-optical Faraday effect in spin-liquid candidates |
| title_full | Magneto-optical Faraday effect in spin-liquid candidates |
| title_fullStr | Magneto-optical Faraday effect in spin-liquid candidates |
| title_full_unstemmed | Magneto-optical Faraday effect in spin-liquid candidates |
| title_short | Magneto-optical Faraday effect in spin-liquid candidates |
| title_sort | magneto optical faraday effect in spin liquid candidates |
| url | http://hdl.handle.net/1721.1/89533 https://orcid.org/0000-0002-5883-787X https://orcid.org/0000-0001-7809-8157 |
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