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Localized charge bifurcation in the coupled quantum dots
Authors:VN Mantsevich  NS Maslova  PI Arseyev
Affiliation:1. Moscow State University, Faculty of Physics, Chair of Semiconductors, Moscow 119991, Russia;2. Moscow State University, Faculty of Physics, Chair of Quantum Electronics, Moscow 119991, Russia;3. P.N. Lebedev Physical Institute of RAS, Moscow 119991, Russia;1. Consortium for Fundamental Physics, School of Mathematics and Statistics, University of Sheffield, Sheffield S3 7RH, United Kingdom;2. Consortium for Fundamental Physics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom;1. Physics Department, Faculty of Science and Science Education, School of Science, University of Sulaimani, Kurdistan Region, Iraq;2. Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland;3. Department of Mechanical Engineering, National United University, 1, Lienda, Miaoli 36003, Taiwan;4. School of Science and Engineering, Reykjavik University, Menntavegur 1, IS-101 Reykjavik, Iceland;1. Institute of Molecular Physics, Polish Academy of Sciences, ul. M. Smoluchowskiego 17, 60-179 Poznań, Poland;2. Jo?ef Stefan Institute, Ljubljana, Slovenia;3. Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
Abstract:We theoretically analyzed localized charge relaxation in a double quantum dot (QD) system coupled with continuous spectrum states in the presence of Coulomb interaction between electrons within a dot. We have found that for a wide range of the system parameters charge relaxation occurs through two stable regimes with significantly different relaxation rates. A certain instant of time exists in the system at which rapid switching between stable regimes takes place. We consider this phenomenon to be applicable for the creation of active elements in nano-electronics based on the fast transition effect between two stable states.
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