Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2]
The competition between proximate electronic phases produces a complex phenomenology in strongly correlated systems. In particular, fluctuations associated with periodic charge or spin modulations, known as density waves, may lead to exotic superconductivity in several correlated materials. However,...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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National Academy of Sciences (U.S.)
2013
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| Online Access: | http://hdl.handle.net/1721.1/79816 https://orcid.org/0000-0003-2680-6005 |
| _version_ | 1811083355432681472 |
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| author | Hudson, E. W. Soumyanarayanan, Anjan Yee, Michael M. He, Yang van Wezel, Jasper Rahn, Dirk J. Rossnagel, Kai Normal, Michael R. Hoffman, Jennifer E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Hudson, E. W. Soumyanarayanan, Anjan Yee, Michael M. He, Yang van Wezel, Jasper Rahn, Dirk J. Rossnagel, Kai Normal, Michael R. Hoffman, Jennifer E. |
| author_sort | Hudson, E. W. |
| collection | MIT |
| description | The competition between proximate electronic phases produces a complex phenomenology in strongly correlated systems. In particular, fluctuations associated with periodic charge or spin modulations, known as density waves, may lead to exotic superconductivity in several correlated materials. However, density waves have been difficult to isolate in the presence of chemical disorder, and the suspected causal link between competing density wave orders and high-temperature superconductivity is not understood. Here we used scanning tunneling microscopy to image a previously unknown unidirectional (stripe) charge-density wave (CDW) smoothly interfacing with the familiar tridirectional (triangular) CDW on the surface of the stoichiometric superconductor NbSe[subscript 2.] Our low-temperature measurements rule out thermal fluctuations and point to local strain as the tuning parameter for this quantum phase transition. We use this quantum interface to resolve two longstanding debates about the anomalous spectroscopic gap and the role of Fermi surface nesting in the CDW phase of NbSe[subscript 2]. Our results highlight the importance of local strain in governing phase transitions and competing phenomena, and suggest a promising direction of inquiry for resolving similarly longstanding debates in cuprate superconductors and other strongly correlated materials. |
| first_indexed | 2024-09-23T12:31:28Z |
| format | Article |
| id | mit-1721.1/79816 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:31:28Z |
| publishDate | 2013 |
| publisher | National Academy of Sciences (U.S.) |
| record_format | dspace |
| spelling | mit-1721.1/798162022-09-28T08:18:06Z Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2] Hudson, E. W. Soumyanarayanan, Anjan Yee, Michael M. He, Yang van Wezel, Jasper Rahn, Dirk J. Rossnagel, Kai Normal, Michael R. Hoffman, Jennifer E. Massachusetts Institute of Technology. Department of Physics Soumyanarayanan, Anjan The competition between proximate electronic phases produces a complex phenomenology in strongly correlated systems. In particular, fluctuations associated with periodic charge or spin modulations, known as density waves, may lead to exotic superconductivity in several correlated materials. However, density waves have been difficult to isolate in the presence of chemical disorder, and the suspected causal link between competing density wave orders and high-temperature superconductivity is not understood. Here we used scanning tunneling microscopy to image a previously unknown unidirectional (stripe) charge-density wave (CDW) smoothly interfacing with the familiar tridirectional (triangular) CDW on the surface of the stoichiometric superconductor NbSe[subscript 2.] Our low-temperature measurements rule out thermal fluctuations and point to local strain as the tuning parameter for this quantum phase transition. We use this quantum interface to resolve two longstanding debates about the anomalous spectroscopic gap and the role of Fermi surface nesting in the CDW phase of NbSe[subscript 2]. Our results highlight the importance of local strain in governing phase transitions and competing phenomena, and suggest a promising direction of inquiry for resolving similarly longstanding debates in cuprate superconductors and other strongly correlated materials. National Science Foundation (U.S.) (Grant DMR-084743) 2013-08-08T18:53:32Z 2013-08-08T18:53:32Z 2013-01 2012-07 Article http://purl.org/eprint/type/JournalArticle 0027-8424 1091-6490 http://hdl.handle.net/1721.1/79816 Soumyanarayanan, A., M. M. Yee, Y. He, J. van Wezel, D. J. Rahn, K. Rossnagel, E. W. Hudson, M. R. Norman, and J. E. Hoffman. “Quantum phase transition from triangular to stripe charge order in NbSe2.” Proceedings of the National Academy of Sciences 110, no. 5 (January 29, 2013): 1623-1627. https://orcid.org/0000-0003-2680-6005 en_US http://dx.doi.org/10.1073/pnas.1211387110 Proceedings of the National Academy of Sciences of the United States of America 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 National Academy of Sciences (U.S.) PNAS |
| spellingShingle | Hudson, E. W. Soumyanarayanan, Anjan Yee, Michael M. He, Yang van Wezel, Jasper Rahn, Dirk J. Rossnagel, Kai Normal, Michael R. Hoffman, Jennifer E. Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2] |
| title | Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2] |
| title_full | Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2] |
| title_fullStr | Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2] |
| title_full_unstemmed | Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2] |
| title_short | Quantum phase transition from triangular to stripe charge order in NbSe[subscript 2] |
| title_sort | quantum phase transition from triangular to stripe charge order in nbse subscript 2 |
| url | http://hdl.handle.net/1721.1/79816 https://orcid.org/0000-0003-2680-6005 |
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