Electron Pumping under Non-Markovian Dissipation: The Role of the Self-Consistent Field
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- 谷村, 吉隆
- Institut für Theoretische Physik, Technische Universität Dresden・Department of Chemistry, Graduate School of Science, Kyoto University
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- Sakurai, Atsunori
- Department of Fundamental Engineering, Institute of Industrial Science, The University of Tokyo
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- Tanimura, Yoshitaka
- Department of Chemistry, Graduate School of Science, Kyoto University
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抄録
Focusing on electron transport through a periodically driven resonant tunneling diode, we study the generation of a non-vanishing dc-current by applying symmetry breaking external ac fields with phase difference φ in a statically unbiased system. The effect of an environment is investigated using the system-bath Hamiltonian represented by the electron system coupled to harmonic oscillator modes with a Drude–Lorentz spectral density. To carry out simulations, we use the hierarchal equations of motion approach in the Wigner representation including a self-consistently constructed electric field that is determined from the electron distribution using the Poisson equation. We show that the maximal pumping current at a phase difference near φ = π/2 is strongly influenced by the system-bath coupling strength. The effect of dissipation is diminished if the self-consistent part of the potential is ignored.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 85 2016
Physical Society of Japan
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詳細情報 詳細情報について
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- CRID
- 1050845760784925696
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- NII論文ID
- 120006410713
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- NII書誌ID
- AA00704814
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- ISSN
- 00319015
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- HANDLE
- 2433/229547
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- NDL書誌ID
- 027188348
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- NDL
- CiNii Articles