Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode
We study the generation of microwave electronic signals by pumping a (311) GaAs Schottky diode with compressive and shear acoustic phonons, generated by femtosecond optical excitation of an Al _lm transducer and mode conversion at the Al-GaAs interface. They propagate through the substrate and arriv...
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| Format: | Article |
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American Physical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/39905/ |
| _version_ | 1848795942760742912 |
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| author | Srikanthreddy, D. Glavin, B.A. Poyser, Caroline Louise Henini, M. Lehmann, D. Jasiukiewicz, Cz. Akimov, Andrey V. Kent, A.J. |
| author_facet | Srikanthreddy, D. Glavin, B.A. Poyser, Caroline Louise Henini, M. Lehmann, D. Jasiukiewicz, Cz. Akimov, Andrey V. Kent, A.J. |
| author_sort | Srikanthreddy, D. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We study the generation of microwave electronic signals by pumping a (311) GaAs Schottky diode with compressive and shear acoustic phonons, generated by femtosecond optical excitation of an Al _lm transducer and mode conversion at the Al-GaAs interface. They propagate through the substrate and arrive at the Schottky device on the opposite surface, where they induce a microwave electronic signal. The arrival time, amplitude and polarity of the signals depend on the phonon mode. A theoretical analysis is made of the polarity of the experimental signals. This includes the piezoelectric and deformation potential mechanisms of electron-phonon interaction in a Schottky contact and shows that the piezoelectric mechanism is dominant for both transverse and longitudinal modes with frequencies below 250 GHz and 70 GHz respectively. |
| first_indexed | 2025-11-14T19:40:06Z |
| format | Article |
| id | nottingham-39905 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:40:06Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-399052020-05-04T18:35:02Z https://eprints.nottingham.ac.uk/39905/ Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode Srikanthreddy, D. Glavin, B.A. Poyser, Caroline Louise Henini, M. Lehmann, D. Jasiukiewicz, Cz. Akimov, Andrey V. Kent, A.J. We study the generation of microwave electronic signals by pumping a (311) GaAs Schottky diode with compressive and shear acoustic phonons, generated by femtosecond optical excitation of an Al _lm transducer and mode conversion at the Al-GaAs interface. They propagate through the substrate and arrive at the Schottky device on the opposite surface, where they induce a microwave electronic signal. The arrival time, amplitude and polarity of the signals depend on the phonon mode. A theoretical analysis is made of the polarity of the experimental signals. This includes the piezoelectric and deformation potential mechanisms of electron-phonon interaction in a Schottky contact and shows that the piezoelectric mechanism is dominant for both transverse and longitudinal modes with frequencies below 250 GHz and 70 GHz respectively. American Physical Society 2017-02-13 Article PeerReviewed Srikanthreddy, D., Glavin, B.A., Poyser, Caroline Louise, Henini, M., Lehmann, D., Jasiukiewicz, Cz., Akimov, Andrey V. and Kent, A.J. (2017) Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode. Physical Review Applied, 7 (2). 024014/1-024014/6. ISSN 2331-7019 http://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.7.024014 doi:10.1103/PhysRevApplied.7.024014 doi:10.1103/PhysRevApplied.7.024014 |
| spellingShingle | Srikanthreddy, D. Glavin, B.A. Poyser, Caroline Louise Henini, M. Lehmann, D. Jasiukiewicz, Cz. Akimov, Andrey V. Kent, A.J. Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode |
| title | Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode |
| title_full | Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode |
| title_fullStr | Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode |
| title_full_unstemmed | Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode |
| title_short | Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode |
| title_sort | piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor schottky diode |
| url | https://eprints.nottingham.ac.uk/39905/ https://eprints.nottingham.ac.uk/39905/ https://eprints.nottingham.ac.uk/39905/ |