The Classical-to-Quantum Crossover in strain-induced ferroelectric transition in SrTiO$_3$ membranes
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909476314939392 |
|---|---|
| author | Li, Jiarui Lee, Yonghun Choi, Yongseong Kim, Jong-Woo Thompson, Paul Crust, Kevin J. Xu, Ruijuan Hwang, Harold Y. Ryan, Philip J. Lee, Wei-Sheng |
| author_facet | Li, Jiarui Lee, Yonghun Choi, Yongseong Kim, Jong-Woo Thompson, Paul Crust, Kevin J. Xu, Ruijuan Hwang, Harold Y. Ryan, Philip J. Lee, Wei-Sheng |
| contents | Mechanical strain presents an effective control over symmetry-breaking phase transitions. In quantum paralelectric SrTiO3, strain can induce the ferroelectric transition via modification of local Ti potential landscape. However, brittle bulk materials can only withstand limited strain range (~0.1%). Taking advantage of nanoscopically-thin freestanding membranes, we demonstrated in-situ strain-induced reversible ferroelectric transition in a single freestanding SrTiO3 membranes. We measure the ferroelectric order by detecting the local anisotropy of the Ti 3d orbital using X-ray linear dichroism at the Ti-K pre-edge, while the strain is determined by X-ray diffraction. With reduced thickness, the SrTiO3 membranes remain elastic with >1% tensile strain cycles. A robust displacive ferroelectricity appears beyond a temperature-dependent critical strain. Interestingly, we discover a crossover from a classical ferroelectric transition to a quantum regime at low temperatures, which enhances strain-induced ferroelectricity. Our results offer a new opportunities to strain engineer functional properties in low dimensional quantum materials and provide new insights into the role of the ferroelectric fluctuations in quantum paraelectric SrTiO3. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_02586 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Classical-to-Quantum Crossover in strain-induced ferroelectric transition in SrTiO$_3$ membranes Li, Jiarui Lee, Yonghun Choi, Yongseong Kim, Jong-Woo Thompson, Paul Crust, Kevin J. Xu, Ruijuan Hwang, Harold Y. Ryan, Philip J. Lee, Wei-Sheng Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons Mechanical strain presents an effective control over symmetry-breaking phase transitions. In quantum paralelectric SrTiO3, strain can induce the ferroelectric transition via modification of local Ti potential landscape. However, brittle bulk materials can only withstand limited strain range (~0.1%). Taking advantage of nanoscopically-thin freestanding membranes, we demonstrated in-situ strain-induced reversible ferroelectric transition in a single freestanding SrTiO3 membranes. We measure the ferroelectric order by detecting the local anisotropy of the Ti 3d orbital using X-ray linear dichroism at the Ti-K pre-edge, while the strain is determined by X-ray diffraction. With reduced thickness, the SrTiO3 membranes remain elastic with >1% tensile strain cycles. A robust displacive ferroelectricity appears beyond a temperature-dependent critical strain. Interestingly, we discover a crossover from a classical ferroelectric transition to a quantum regime at low temperatures, which enhances strain-induced ferroelectricity. Our results offer a new opportunities to strain engineer functional properties in low dimensional quantum materials and provide new insights into the role of the ferroelectric fluctuations in quantum paraelectric SrTiO3. |
| title | The Classical-to-Quantum Crossover in strain-induced ferroelectric transition in SrTiO$_3$ membranes |
| topic | Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2502.02586 |