DIELECTRIC MATRIX INFLUENCE ON TUNNEL CURRENT-VOLTAGE CHARACTERISTICS
IN QUANTUM POINTS IN TERMS OF THE EXTERNAL ELECTRIC FIELD

Krevchik Vladimir Dmitrievich, Doctor of physical and mathematical sciences, professor, head of sub-department of physics, Penza State University, physics@pnzgu.ru
Semenov Mikhail Borisovich, Doctor of physical and mathematical sciences, professor, sub-department  of physics, Penza State University, physics@pnzgu.ru
Zaytsev Roman Vladimirovich, Candidate of physical and mathematical sciences, associate professor, sub-department of physics, Penza State University, physics@pnzgu.ru
Kozenko Sergey Evgenyevich, Postgraduate student, Penza State University , physics@pnzgu.ru
Manukhina Maria Alexandrovna, Postgraduate student, Penza State University, physics@pnzgu.ru

539.23; 539.216.1; 537.311.322

The article considers a 1D-dissipative tunneling model for structures with quantum dots in system of joint AFM/STM in external electric field. It is revealed, that the influence of a local mode of a heat-bath on the 1D-dissipative tunnel probability leads to occurence of two peaks in corresponding dependence from intensity of electric field; one of this peaks is unstable (for case of symmetric double – well oscillator potential), and another additional peak is a stable one. Obtained theoretical dependence qualitatively corresponds to experimental VAC for the AFM cantilever contact to surface of QD from InAs.

dissipative tunneling, quantum dot, dielectric matrix.