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Persistent Identifier
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perma:LIST.HTVBFA |
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Publication Date
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2025-12-09 |
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Title
| Phase coexistence and electric-field control of toroidal order in oxide superlattices [* Cross-Reference *] |
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Other Identifier
| https://doi.org/10.1038/NMAT4951 |
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Author
| Damodaran, A. R. (Department of Materials Science and Engineering, Lawrence Berkeley National Laboratory)
Clarkson, J. D. (Department of Materials Science and Engineering, Lawrence Berkeley National Laboratory)
Hong, Z. (Pennsylvania State University)
Liu, H. (Argonne National Laboratory)
Yadav, A. K. (Department of Materials Science and Engineering, Lawrence Berkeley National Laboratory, University of California, Berkeley)
Nelson, C. T. (Department of Materials Science and Engineering, Lawrence Berkeley National Laboratory)
Hsu, S. L. (Department of Materials Science and Engineering, Lawrence Berkeley National Laboratory)
McCarter, M. R. (University of California, Berkeley)
Park, K. D. (University of Colorado Boulder)
Kravtsov, V. (University of Colorado Boulder)
Farhan, A. (Lawrence Berkeley National Laboratory)
Dong, Y. (Argonne National Laboratory)
Cai, Z. (Argonne National Laboratory)
Zhou, H. (Argonne National Laboratory)
Aguado-Puente, P. (Universidad del Pais Vasco, Donostia International Physics Center)
Garcia-Fernandez, P. (Universidad de Cantabria)
Iniguez, J. (Luxembourg Institute of Science and Technology)
Junquera, J. (Universidad de Cantabria)
Scholl, A. (Lawrence Berkeley National Laboratory)
Raschke, M. B. (University of Colorado Boulder)
Chen, L. Q. (Pennsylvania State University)
Fong, D. D. (Argonne National Laboratory)
Ramesh, R. (Department of Materials Science and Engineering, Lawrence Berkeley National Laboratory, University of California, Berkeley)
Martin, L. W. (Department of Materials Science and Engineering, Lawrence Berkeley National Laboratory) |
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Point of Contact
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Use email button above to contact.
LIST RDS (LIST) |
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Description
| Systems that exhibit phase competition, order parameter coexistence, and emergent order parameter topologies constitute a major part of modern condensed-matter physics. Here, by applying a range of characterization techniques, and simulations, we observe that in PbTiO"3/SrTiO"3 superlattices all of these effects can be found. By exploring superlattice period-, temperature- and field-dependent evolution of these structures, we observe several new features. First, it is possible to engineer phase coexistence mediated by a first-order phase transition between an emergent, low-temperature vortex phase with electric toroidal order and a high-temperature ferroelectric a"1/a"2 phase. At room temperature, the coexisting vortex and ferroelectric phases form a mesoscale, fibre-textured hierarchical superstructure. The vortex phase possesses an axial polarization, set by the net polarization of the surrounding ferroelectric domains, such that it possesses a multi-order-parameter state and belongs to a class of gyrotropic electrotoroidal compounds. Finally, application of electric fields to this mixed-phase system permits interconversion between the vortex and the ferroelectric phases concomitant with order-of-magnitude changes in piezoelectric and nonlinear optical responses. Our findings suggest new cross-coupled functionalities. (2017-01-01)
***This entry has been automatically imported via Infodoc(ASO) CSV by LIST harvest scripts. Please refer to https://doi.org/10.1038/NMAT4951 for the original and latest version of the dataset and data downloads*** (2025-12-02) |
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Subject
| Other |
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Keyword
| parameter topologies constitute
modern condensed-matter physics
order parameter topologies
exhibit phase competition
order parameter |
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Deposit Date
| 2017-01-01 |
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Data Type
| Article |
