Transmission characteristics including the coupling effect between normal and lateral degrees of freedom in step-barrier structures with a longitudinal magnetic field |
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| Authors: | Z. M. Wang M. Zhang Y. C. Li |
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| Affiliation: | a Department of Physics, Hebei Normal University, ShijiaZhuang, Hebei 050016, People's Republic of China;b Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China;c CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, People's Republic of China;d The Academy of Armored Forces Engineering, Beijing 100072, People's Republic of China |
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| Abstract: | In this paper we study the tunneling transport phenomena in a step-barrier structure under the influence of a longitudinal magnetic field, where the magneto-coupling effect is taken into account between the longitudinal motion component and the transverse Landau orbits of an electron. We also present numerical results of single square-barrier and asymmetrical double-barrier heterostructures for comparison. The results show that the coupling effect can play important role during the electronic tunneling process. It not only causes a significant shift of resonant peaks toward the low-energy region, but also enhances the transmission probability. |
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| Keywords: | Magneto-coupling effect Step-barrier structure Resonant tunneling |
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