DISTINCTIVE FEATURES OF TWO-DIMENSIONAL TUNNEL BIFURCATIONS IN TERMS OF EXTERNAL ELECTRIC FIELD

Zhukovsky Vladimir Cheslavovich, Doctor of physico-mathematical sciences, professor, sub-department of theoretical physics, Moscow State University named after M. V. Lomonosov, zhukovsk@phys.msu.ru
Gorshkov Oleg Nikolaevich, Director of Physics and Engineering Research Institute attached to Nizhniy Novgorod State University named after N. I. Lobachevskiy, gorshkov@nifti.unn.ru
Krevchik Vladimir Dmitrievich, Doctor of physico-mathematical sciences, professor, head of physics sub-department, Penza State University, physics@pnzgu.ru
Semenov Mikhail Borisovich, Doctor of physico-mathematical sciences, professor, physics sub-deparment, Penza State University, physics@pnzgu.ru
Smirnov Yury Gennadyevich, Doctor of physico-mathematical sciences, professor, head of sub-department of mathematics and supercomputer modeling, Penza State University, Smirnov@Penzadom.ru
Chuprunov Evgeny Vladimirovich, Doctor of physico-mathematical sciences, professor, rector of Nizhniy Novgorod State University named after N. I. Lobachevskiy, chuprun@phys.unn.runnet.ru
Rudin Vadim Alexandrovich, Student, Penza State University, physics@pnzgu.ru
Skibitskaya Natalya Yuryevna, Postgraduate student, Penza State University, physics@pnzgu.ru
Krevchik Pavel Vladimirovich, Student, Penza State University, physics@pnzgu.ru
Filatov Dmitry Olegovich, Candidate of physico-mathematical sciences, associate professor, Physics and Engineering Research Institute attached to Nizhniy Novgorod State University named after N. I. Lobachevskiy, filatov@phys.unn.ru
Antonov Dmitry Alexandrovich, Research worker, Physics and Engineering Research Institute attached to Nizhniy Novgorod State University named after N. I. Lobachevskiy
Lapshina Mariya Alexandrovna, Postgraduate student, Physics and Engineering Research Institute attached to
Nizhniy Novgorod State University named after N. I. Lobachevskiy
Shenina Mariya Evgenyevna, Postgraduate student, Physics and Engineering Research Institute attached to Nizhniy Novgorod State University named after N. I. Lobachevskiy
Kendji Yamomoto, Professor, vice director of research institute of International Medical Centre (Tokyo, Japan), i_kudryashov@tokyoinst.co.jp

539.2:541.117

Controllability problem for two-dimensional dissipative tunneling in system of «the AFM/STM cantilever tip – quantum dot», simulated by 2D oscillator potential in a heat bath and external electric field, has been investigated. The 2D tunnel transfer probability dependence on external electric field has been calculated in frames of instanton approximation. Obtained results are qualitatively corresponded to separate experimental VACs for system «platinized cantilever tip – golden quantum dot», which have been obtained in N. Novgorod State University. Earlier predicted 2D tunnel bifurcations with dissipation for case of parallel tunneling interacting particles are found as experimentally observed and stable ones.

dissipative tunneling, 2d-bifurcations, quantum dots.