Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3
Abstract SrTiO3, a perovskite oxide, holds significant potential for application in the field of oxide electronics. Notably, its photoelectric activity in the low temperature regime, which overlaps with the quantum paraelectric state, exhibits remarkable characteristics. In this study, it is demonst...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-12-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202306420 |
| _version_ | 1797389536309805056 |
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| author | Mehrzad Soleimany Marin Alexe |
| author_facet | Mehrzad Soleimany Marin Alexe |
| author_sort | Mehrzad Soleimany |
| collection | DOAJ |
| description | Abstract SrTiO3, a perovskite oxide, holds significant potential for application in the field of oxide electronics. Notably, its photoelectric activity in the low temperature regime, which overlaps with the quantum paraelectric state, exhibits remarkable characteristics. In this study, it is demonstrated that when photo‐excited with above band gap energy photons, SrTiO3 exhibits non‐linear transport of photocarriers and voltage‐controlled negative resistance, resulting from an intervalley transfer of photo‐induced electrons. As a consequence of the negative resistance, the photocurrent becomes unstable and spontaneously gives rise to low frequency Gunn‐like oscillations. |
| first_indexed | 2024-03-08T22:58:24Z |
| format | Article |
| id | doaj.art-516902b0f5ed422c9a89293af9bd08cc |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-08T22:58:24Z |
| publishDate | 2023-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-516902b0f5ed422c9a89293af9bd08cc2023-12-16T04:16:14ZengWileyAdvanced Science2198-38442023-12-011035n/an/a10.1002/advs.202306420Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3Mehrzad Soleimany0Marin Alexe1Department of Physics University of Warwick Gibbet Hill Road Coventry CV4 7AL UKDepartment of Physics University of Warwick Gibbet Hill Road Coventry CV4 7AL UKAbstract SrTiO3, a perovskite oxide, holds significant potential for application in the field of oxide electronics. Notably, its photoelectric activity in the low temperature regime, which overlaps with the quantum paraelectric state, exhibits remarkable characteristics. In this study, it is demonstrated that when photo‐excited with above band gap energy photons, SrTiO3 exhibits non‐linear transport of photocarriers and voltage‐controlled negative resistance, resulting from an intervalley transfer of photo‐induced electrons. As a consequence of the negative resistance, the photocurrent becomes unstable and spontaneously gives rise to low frequency Gunn‐like oscillations.https://doi.org/10.1002/advs.202306420Gunn oscillationnegative differential resistancephoto‐conductivitytransferred‐electron devices |
| spellingShingle | Mehrzad Soleimany Marin Alexe Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3 Advanced Science Gunn oscillation negative differential resistance photo‐conductivity transferred‐electron devices |
| title | Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3 |
| title_full | Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3 |
| title_fullStr | Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3 |
| title_full_unstemmed | Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3 |
| title_short | Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3 |
| title_sort | photoinduced negative differential resistivity and gunn oscillations in srtio3 |
| topic | Gunn oscillation negative differential resistance photo‐conductivity transferred‐electron devices |
| url | https://doi.org/10.1002/advs.202306420 |
| work_keys_str_mv | AT mehrzadsoleimany photoinducednegativedifferentialresistivityandgunnoscillationsinsrtio3 AT marinalexe photoinducednegativedifferentialresistivityandgunnoscillationsinsrtio3 |