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This article is cited in 1 scientific paper (total in 1 paper)
XXIV International Symposium Nanophysics and Nanoelectronics, Nizhny Novgorod, March 10--13, 2020
Theoretical and Mathematical Physics
Features of two-dimensional bifurcations during dissipative electron tunneling in arrays of Au nanoparticles
M. B. Semenova, V. D. Krevchika, D. O. Filatovb, A. V. Shorokhovacde, A. P. Shkurinovf, P. V. Krevchika, Y. H. Wangg, T. R. Lig, A. K. Malikh, D. A. Antonovb, I. M. Semenova a Penza State University
b Lobachevsky State University of Nizhny Novgorod
c University of Jyväskylä, Seminaarinkatu, Fl-40014, Finland
d Ogarev Institute of Physics and Chemistry, Mordovia State University, Saransk, Russia
e International Research Centre Mag Top, Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland
f Institute of Problems of Laser and Information Technologies, Russian Academy of Sciences, 140700, Shatura, Moscow oblast, Russia
g Key Laboratory for Special Function Materials, School of Physical Science and Technology, Lanzhou University, Lanzhou, China
h Department of Physics, Multanimal Modi College Modinagar, Uttar Prasesh, India
Abstract:
Within the 2D theory of dissipative tunneling in the semiclassical approximation (a rarefied gas of instanton–anti-instanton pairs) at a finite temperature in the presence of an external electric field, the features of tunneling transport in the planar structures with the quantum dots made of colloidal gold–which, presumably, possess the properties of a metamaterial–are investigated. It is shown experimentally that either a single effect or a double effect of 2D tunnel bifurcations (in the form of a kink or kinks on the tunneling current–voltage curve) is observed depending on the position of the cantilever tip of a combined atomic force and scanning tunneling microscope (AFM/STM), which can be either above a single quantum dot or between two adjacent quantum dots, respectively. As our theoretical model shows, such a regime of double bifurcation (a double smoothed kink on the tunneling current–voltage curve) that is associated with the manifestation of the properties of a metamaterial by the structure under study. A convincing qualitative agreement is obtained between the experimental current–voltage characteristics and the field dependence of the probability of 2D dissipative tunneling in the two investigated regimes with due regard for the observed quantum beats (oscillations) in the vicinity of 2D bifurcation points.
Keywords:
2D - bifurcations, quantum tunneling with dissipation, combined AFM / STM, Au nanoparticle arrays.
Received: 02.04.2020 Revised: 02.04.2020 Accepted: 02.04.2020
Citation:
M. B. Semenov, V. D. Krevchik, D. O. Filatov, A. V. Shorokhov, A. P. Shkurinov, P. V. Krevchik, Y. H. Wang, T. R. Li, A. K. Malik, D. A. Antonov, I. M. Semenov, “Features of two-dimensional bifurcations during dissipative electron tunneling in arrays of Au nanoparticles”, Zhurnal Tekhnicheskoi Fiziki, 90:11 (2020), 1797–1805; Tech. Phys., 65:11 (2020), 1717–1725
Linking options:
https://www.mathnet.ru/eng/jtf5143 https://www.mathnet.ru/eng/jtf/v90/i11/p1797
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