A1 Journal article (refereed)
Influence of dissipative tunneling on the photodielectric effect associated with the excitation of impurity complexes A+ + e in a quasi-zero-dimensional structure (2022)

Krevchik, V. D., Razumov, A. V., Semenov, M. B., Levashov, A. V., & Shorokhov, A. V. (2022). Influence of dissipative tunneling on the photodielectric effect associated with the excitation of impurity complexes A+ + e in a quasi-zero-dimensional structure. Nanosistemy : Fizika, Himia, Matematika, 13(3), 250-264. https://doi.org/10.17586/2220-8054-2022-13-3-250-264

JYU authors or editors

Publication details

All authors or editors: Krevchik, V. D.; Razumov, A. V.; Semenov, M. B.; Levashov, A. V.; Shorokhov, A. V.

Journal or series: Nanosistemy : Fizika, Himia, Matematika

ISSN: 2220-8054

eISSN: 2305-7971

Publication year: 2022

Publication date: 30/06/2022

Volume: 13

Issue number: 3

Pages range: 250-264

Publisher: ITMO University

Publication country: Russian Federation

Publication language: English

DOI: https://doi.org/10.17586/2220-8054-2022-13-3-250-264

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82581

Abstract

Effect of tunneling decay for the quasi-stationary A+-state, in an impurity complex A+ + e (a hole, localized on a neutral acceptor, interacting with an electron, localized in the ground state of a quantum dot) on the photodielectric effect, associated with the excitation of impurity complexes A+ + e in a quasi-zero-dimensional structure, has been studied in the zero-radius potential model in the one-instanton approximation. Calculation of the binding energy of a hole in an impurity complex A+ + e was performed in the zero radius potential model in the adiabatic approximation. It is shown that as the probability of dissipative tunneling increases, the binding energy of a hole in a complex A+ + e decreases, which is accompanied by an increase in the effective localization radius of the impurity complex and, accordingly, an increase in the magnitude of the photodielectric effect. The spectral dependence of the photodielectric effect has been calculated in the dipole approximation taking into account the dispersion of the quantum dot radius. A high sensitivity of the magnitude of the photodielectric effect to such parameters of dissipative tunneling as the frequency of the phonon mode, temperature, and coupling constant with the contact medium, has been revealed.

Keywords: nanoelectronics; quantum physics

Free keywords: photodielectric effect; quantum dot; adiabatic approximation; impurity complex; relative permittivity; dissipative tunneling; adiabatic potential; quasi-zero-dimensional structure

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2022

Preliminary JUFO rating: 1