Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films
Transition metal oxides possess complex free-energy surfaces with competing degrees of freedom. Photoexcitation allows shaping of such rich energy landscapes. In epitaxially strained La[subscript 0.67]Ca[subscript 0.33]MnO[subscript 3], optical excitation with a sub-100-fs pulse above 2 mJ/cm[supers...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/130267 |
| _version_ | 1826197512437891072 |
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| author | Teitelbaum, Samuel Welch Ofori-Okai, Benjamin Kwasi Cheng, Yu-Hsiang Zhang, Jingdi Jin, Feng Wu, Wenbin Averitt, Richard D. Nelson, Keith Adam |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Teitelbaum, Samuel Welch Ofori-Okai, Benjamin Kwasi Cheng, Yu-Hsiang Zhang, Jingdi Jin, Feng Wu, Wenbin Averitt, Richard D. Nelson, Keith Adam |
| author_sort | Teitelbaum, Samuel Welch |
| collection | MIT |
| description | Transition metal oxides possess complex free-energy surfaces with competing degrees of freedom. Photoexcitation allows shaping of such rich energy landscapes. In epitaxially strained La[subscript 0.67]Ca[subscript 0.33]MnO[subscript 3], optical excitation with a sub-100-fs pulse above 2 mJ/cm[superscript 2] leads to a persistent metallic phase below 100 K. Using single-shot optical and terahertz spectroscopy, we show that this phase transition is a multistep process. We conclude that the phase transition is driven by partial charge-order melting, followed by growth of the persistent metallic phase on longer timescales. A time-dependent Ginzburg-Landau model can describe the fast dynamics of the reflectivity, followed by longer timescale in-growth of the metallic phase. |
| first_indexed | 2024-09-23T10:48:49Z |
| format | Article |
| id | mit-1721.1/130267 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:48:49Z |
| publishDate | 2021 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1302672022-09-30T23:13:27Z Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films Teitelbaum, Samuel Welch Ofori-Okai, Benjamin Kwasi Cheng, Yu-Hsiang Zhang, Jingdi Jin, Feng Wu, Wenbin Averitt, Richard D. Nelson, Keith Adam Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Transition metal oxides possess complex free-energy surfaces with competing degrees of freedom. Photoexcitation allows shaping of such rich energy landscapes. In epitaxially strained La[subscript 0.67]Ca[subscript 0.33]MnO[subscript 3], optical excitation with a sub-100-fs pulse above 2 mJ/cm[superscript 2] leads to a persistent metallic phase below 100 K. Using single-shot optical and terahertz spectroscopy, we show that this phase transition is a multistep process. We conclude that the phase transition is driven by partial charge-order melting, followed by growth of the persistent metallic phase on longer timescales. A time-dependent Ginzburg-Landau model can describe the fast dynamics of the reflectivity, followed by longer timescale in-growth of the metallic phase. Office of Naval Research (Grants N00014-12-1-0530 and N00014-16-1-2090) National Science Foundation (Grants CHE-1111557 and CHE-1665383) Department of Energy (Grant DE-SC0012375) 2021-03-29T20:44:11Z 2021-03-29T20:44:11Z 2019-12 2019-06 2020-09-21T13:54:45Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 https://hdl.handle.net/1721.1/130267 Teitelbaum, Samuel W. et al. "Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films." Physical Review Letters 123, 26 (December 2019): 267201 © 2019 American Physical Society. en http://dx.doi.org/10.1103/PHYSREVLETT.123.267201 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) APS |
| spellingShingle | Teitelbaum, Samuel Welch Ofori-Okai, Benjamin Kwasi Cheng, Yu-Hsiang Zhang, Jingdi Jin, Feng Wu, Wenbin Averitt, Richard D. Nelson, Keith Adam Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films |
| title | Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films |
| title_full | Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films |
| title_fullStr | Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films |
| title_full_unstemmed | Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films |
| title_short | Dynamics of a Persistent Insulator-to-Metal Transition in Strained Manganite Films |
| title_sort | dynamics of a persistent insulator to metal transition in strained manganite films |
| url | https://hdl.handle.net/1721.1/130267 |
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