Terahertz field–induced ferroelectricity in quantum paraelectric SrTiO 3
Open accessAbstract
Driving strontium titanate ferroelectric: Hidden phases are metastable collective states of matter that are typically not accessible on equilibrium phase diagrams. Nova et al. used infrared pulses to excite higher-frequency lattice modes that drive the crystal into a metastable ferroelectric phase, a phase that can persist for many hours. X. Li et al. used terahertz fields to drive the soft mode that moves the ions in the crystal into the positions they occupy in the new phase. The ferroelectric phase in this case was transient, lasting on the order of 10 picoseconds. Because these hidden phases can host exotic properties in otherwise conventional materials, the accessibility to and control of such hidden phases may broaden potential functionality and applications. Science , this issue p. 1075 , p. 1079
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At low temperatures, intense coherent terahertz excitation of the soft mode in STO can lead to highly nonlinear phonon responses that overcome the quantum fluctuations to create a ferroelectric order absent at equilibrium that is coupled to the induced magnetic order.
“At low temperatures, intense coherent terahertz excitation of the soft mode in STO can lead to highly nonlinear phonon responses that overcome the quantum fluctuations to create a ferroelectric order absent at equilibrium42,43 that is coupled to the induced magnetic order.”
From Terahertz electric-field-driven dynamical multiferroicity in SrTiO3 (2024) · cites this paper as [42]
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References 55 · Cited by 523
- Authors
- Li, X., Qiu, T., Zhang, J., Baldini, E., Lu, J., Rappe, A. M., & Nelson, K. A.
- Affiliations
- Massachusetts Institute of Technology (US)
- University of Pennsylvania (US)
- Corresponding author
- Nelson, Keith A.
- Venue
- Science
- Published
- 2019-06-14
- Volume
- 364
- Issue
- 6445
- Pages
- 1079-1082
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2951821564
- Cited by
- 523
- References
- 55
- Citations by year
- 2026: 61 · 2025: 98 · 2024: 71 · 2023: 86 · 2022: 67 · 2021: 81 · 2020: 48 · 2019: 10
- FWCI
- 18.59
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation (CHE-1808202, DMR-1719353)
- Office of Naval Research (N00014-17-1-2574)
- U.S. Department of Energy (DE-SC0019126)
- Swiss National Science Foundation (P2ELP2-172290)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Multiferroics and related materials
- Physical Sciences › Materials Science › Materials Chemistry › Solid-state spectroscopy and crystallography
- Keywords
- quantum paraelectricity, SrTiO3, hidden phase, soft mode, infrared excitation, lattice dynamics
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