Anharmonic Bloch oscillations of electrons in electrically biased superlattices
- Authors: Ivanov K.A.1,2, Girshova E.I.1,2, Kaliteevski M.A.1,2,3, Clark S.J.4, Gallant A.J.5
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Affiliations:
- ITMO University
- St. Petersburg Academic University—Nanotechnology Research and Education Centre, Russian Academy of Sciences
- Ioffe Physical–Technical Institute
- Department of Physics
- School of Engineering and Computing Sciences
- Issue: Vol 50, No 11 (2016)
- Pages: 1463-1468
- Section: XX International Symposium “Nanophysics and Nanoelectronics”, Nizhny Novgorod, March 14–18, 2016
- URL: https://journals.rcsi.science/1063-7826/article/view/198329
- DOI: https://doi.org/10.1134/S1063782616110117
- ID: 198329
Cite item
Abstract
The phenomenon of anharmonic Bloch oscillations (i.e., oscillations with a frequency which is a multiple of the Bloch frequency) is considered. The energy-band structure of silicon-carbide polytypes where these oscillations are observed is calculated ab initio. A one-dimensional model potential making it possible to calculate the Stark wave functions in a biased superlattice is constructed for these polytypes. The transfer matrix method is used to find the set of energy levels (the so-called Stark ladder) and calculate the electron wave functions. It is shown that both radiative transitions between neighboring Stark levels (at the Bloch frequency) and transitions in the form of jumps via several levels, accompanied by emission at frequencies that are multiples of the Bloch frequency, may occur. The calculated probabilities of transitions between Stark-ladder levels increase with increasing applied field strength.
About the authors
K. A. Ivanov
ITMO University; St. Petersburg Academic University—Nanotechnology Research and Education Centre, Russian Academy of Sciences
Author for correspondence.
Email: kivanov@corp.ifmo.ru
Russian Federation, St. Petersburg, 197101; St. Petersburg, 194021
E. I. Girshova
ITMO University; St. Petersburg Academic University—Nanotechnology Research and Education Centre, Russian Academy of Sciences
Email: kivanov@corp.ifmo.ru
Russian Federation, St. Petersburg, 197101; St. Petersburg, 194021
M. A. Kaliteevski
ITMO University; St. Petersburg Academic University—Nanotechnology Research and Education Centre, Russian Academy of Sciences; Ioffe Physical–Technical Institute
Email: kivanov@corp.ifmo.ru
Russian Federation, St. Petersburg, 197101; St. Petersburg, 194021; St. Petersburg, 194021
S. J. Clark
Department of Physics
Email: kivanov@corp.ifmo.ru
United Kingdom, Durham, DH1 3LE
A. J. Gallant
School of Engineering and Computing Sciences
Email: kivanov@corp.ifmo.ru
United Kingdom, Durham, DH1 3LE