Calculation of the Nondivergent Cotunneling Rates in a Double Tunnel Junction Embedded in a Dissipative Electromagnetic Environment(Condensed matter: structure and mechanical and thermal properties)

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概要

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• We consider two serially connected tunnel junctions embedded in a dissipative electromagnetic environment. Within the Coulomb blockade region where the sequential single electron tunneling is suppressed, electron transport through the whole system is achieved via higher-order tunneling processes. The standard approach using perturbation theory to fourth order in the tunnel Hamiltonian gives divergent rates of these processes at the Coulomb blockade boundary. By using a diagrammatic technique, we perform an analytic summation over a perturbative expansion of infinite order. In this way, we remove the divergence and derive an expression for the cotunneling current applicable over the whole Coulomb blockade region.

• 社団法人日本物理学会の論文
• 2007-07-15

著者

• IWABUCHI Shuichi

  Department of Physics, Faculty of Science, Nara Women's University

• Bubanja Vladimir

  Industrial Research Limited

• Iwabuchi Shuichi

  Department Of Physics Faculty Of Science Nagoya University

• Iwabuchi Shuichi

  Department Of Physics Nara Women's University

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• Calculation of the Nondivergent Cotunneling Rates in a Double Tunnel Junction Embedded in a Dissipative Electromagnetic Environment(Condensed matter: structure and mechanical and thermal properties)
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