Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterial
We theoretically and numerically demonstrate that the spontaneous parity-time (PT) symmetry breaking phase transition can be realized respectively by using two independent tuning ways in a tri-layered metamaterial that consists of periodic array of metal-semiconductor Schottky junctions. The existen...
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| Format: | Article |
| Language: | English |
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De Gruyter
2019-02-01
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| Series: | Nanophotonics |
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| Online Access: | http://www.degruyter.com/view/j/nanoph.2019.8.issue-3/nanoph-2018-0207/nanoph-2018-0207.xml?format=INT |
| _version_ | 1819290129478451200 |
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| author | Bai Qiang |
| author_facet | Bai Qiang |
| author_sort | Bai Qiang |
| collection | DOAJ |
| description | We theoretically and numerically demonstrate that the spontaneous parity-time (PT) symmetry breaking phase transition can be realized respectively by using two independent tuning ways in a tri-layered metamaterial that consists of periodic array of metal-semiconductor Schottky junctions. The existence conditions of PT symmetry and its phase transition are obtained by using a theoretical model based on the coupled mode theory. A hot-electron photodetection based on the same tri-layered metamaterial is proposed, which can directly show the spontaneous PT symmetry breaking phase transition in photocurrent and possesses dynamical tunability and switchability. This work extends the concept of PT symmetry into the hot-electron photodetection, enriches the functionality of the metamaterial and the hot-electron device, and has varieties of potential and important applications in optoelectronics, photodetection, photovoltaics, and photocatalytics. |
| first_indexed | 2024-12-24T03:17:50Z |
| format | Article |
| id | doaj.art-1174c81a24cc4c81a89c02d30e0d8088 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-12-24T03:17:50Z |
| publishDate | 2019-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-1174c81a24cc4c81a89c02d30e0d80882022-12-21T17:17:35ZengDe GruyterNanophotonics2192-86142019-02-018349550410.1515/nanoph-2018-0207nanoph-2018-0207Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterialBai Qiang0Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208, USAWe theoretically and numerically demonstrate that the spontaneous parity-time (PT) symmetry breaking phase transition can be realized respectively by using two independent tuning ways in a tri-layered metamaterial that consists of periodic array of metal-semiconductor Schottky junctions. The existence conditions of PT symmetry and its phase transition are obtained by using a theoretical model based on the coupled mode theory. A hot-electron photodetection based on the same tri-layered metamaterial is proposed, which can directly show the spontaneous PT symmetry breaking phase transition in photocurrent and possesses dynamical tunability and switchability. This work extends the concept of PT symmetry into the hot-electron photodetection, enriches the functionality of the metamaterial and the hot-electron device, and has varieties of potential and important applications in optoelectronics, photodetection, photovoltaics, and photocatalytics.http://www.degruyter.com/view/j/nanoph.2019.8.issue-3/nanoph-2018-0207/nanoph-2018-0207.xml?format=INTparity-time symmetryphase transitionhot electronmetamaterialphotodetection05.30.Rt72.20.Ht78.67.Pt07.57.Kp |
| spellingShingle | Bai Qiang Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterial Nanophotonics parity-time symmetry phase transition hot electron metamaterial photodetection 05.30.Rt 72.20.Ht 78.67.Pt 07.57.Kp |
| title | Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterial |
| title_full | Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterial |
| title_fullStr | Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterial |
| title_full_unstemmed | Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterial |
| title_short | Manifestation of the spontaneous parity-time symmetry breaking phase transition in hot-electron photodetection based on a tri-layered metamaterial |
| title_sort | manifestation of the spontaneous parity time symmetry breaking phase transition in hot electron photodetection based on a tri layered metamaterial |
| topic | parity-time symmetry phase transition hot electron metamaterial photodetection 05.30.Rt 72.20.Ht 78.67.Pt 07.57.Kp |
| url | http://www.degruyter.com/view/j/nanoph.2019.8.issue-3/nanoph-2018-0207/nanoph-2018-0207.xml?format=INT |
| work_keys_str_mv | AT baiqiang manifestationofthespontaneousparitytimesymmetrybreakingphasetransitioninhotelectronphotodetectionbasedonatrilayeredmetamaterial |