NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2020, 11 (5), P. 510–518
Influence effect of an external electric field and dissipative tunneling on intracenter optical transitions in quantum molecules with D2- states
V. D. Krevchik – Penza State University, Krasnaya str., 40, Penza, 440026, Russia
A. V. Razumov – Penza State University, Krasnaya str., 40, Penza, 440026, Russia
P. V. Krevchik – Penza State University, Krasnaya str., 40, Penza, 440026, Russia
M. B. Semenov – Penza State University, Krasnaya str., 40, Penza, 440026, Russia; Misha29.02.1@gmail.com
A. V. Shorokhov – Penza State University, Krasnaya str., 40, Penza, 440026, Russia; University of Jyväskylä, P.O. Box 35 (YFL), Jyväskylä, 40014, Finland; National Research Mordovia State University, Saransk, 430005, Russia; International Research Centre Mag Top, Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, Warsaw, PL-02668, Poland
A. P. Shkurinov – Institute for Problems of Laser and Information Technologies RAS, Moscow reg., 140700; Penza State University, Krasnaya str., 40, Penza, 440026, Russia
I. A. Ozheredov – Institute for Problems of Laser and Information Technologies RAS, Moscow reg., 140700; Penza State University, Krasnaya str., 40, Penza, 440026, Russia
Y. H. Wang – Lanzhou University, Lanzhou, 730000, China
T. R. Li – Lanzhou University, Lanzhou, 730000, China
A. K. Malik – Multanimal Modi College Modinagar, Uttar Prasesh, 201204, India
In the zero-range potential model and in the effective mass approximation, dispersion equations have been obtained, that describe dependence of the average binding energies of the quasistationary g- and u-states of the D2--center in the QD, as well as the widths of energy levels on the magnitude of the external electric field and the parameters of 1D-dissipative tunneling. Dips in the field dependences of the binding energies average values for quasi-stationary g- and u-states have been revealed. It is shown that the field dependences of the energy level widths for the g- and u- states of the D2--center have a resonance structure at the external electric field strengths corresponding to the dips in the field dependences of the average binding energies. In the dipole approximation, the field dependence of the probability of the electron radiative transition from a quasistationary u-state to a quasi-stationary g-state of the DD2--center in a QD in the presence of dissipative tunneling with the participation of two local phonon modes has been calculated. It was found that the curve of the radiative transition probability (RTP) dependence on the strength of the external electric field contains three peaks.
Keywords: dissipative tunneling, quantum molecules, optical transitions.
PACS 73.40.Gk, 03.65.Xp
DOI 10.17586/2220-8054-2020-11-5-510-518
