Open AccessConductivity of a superlattice based on the semi-Dirac crystals
Author(s) -
S. V. Kryuchkov,
E. I. Kukhar,
L N Nikolaeva
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1697/1/012199
Subject(s) - superlattice , condensed matter physics , brillouin zone , band gap , semiconductor , conductivity , semimetal , materials science , electrical resistivity and conductivity , physics , optoelectronics , quantum mechanics
The current-voltage characteristic of a superlattice based on the semi-Dirac crystals has been studied. The case of the absence of a gap between valence and conduction mini-band has been considered. Such a superlattice has been shown to be characterized by both semi-metal and narrow-band semiconductor electrical properties. From the one hand there is the point in the Brillouin zone close to which the depletion of the states occurs without gap opening. From the other hand there is the portion of negative differential conductivity in the current-voltage characteristic. The dependences of longitudinal conductivity and maximum of the current-voltage characteristic on the Fermi energy have been investigated.