Quantum Nucleation of Phase Slip in Charge-Density-Wave Systems: Role of Long-Range Coulomb Interactions.
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- Takane Yositake
- Department of Physical Electronics, Hiroshima University, Higashi-Hiroshima 739-8530
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抄録
Phase-slip processes near electrical contacts are responsible for the nonlinear current-voltage characteristic in clean charge-density-wave systems. In the low-temperature regime near absolute zero, the phase slip is induced by dislocation-loop (DL) nucleation due to quantum tunneling. The quantum nucleation rate of the phase slip is calculated at zero temperature by taking account of the Coulomb interaction effect on the DL. It is shown that a large charging energy associated with the DL greatly reduces the nucleation rate in the low-bias regime. Consequently, the current-voltage characteristic, which is determined by the nucleation rate, is shifted to higher voltages compared with that in the absence of the Coulomb interaction. The voltage shift is of the order of Vth ∼ γ \hbar ωp/e (γ: anisotropy constant, ωp: plasma frequency in the normal state).
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 71 (8), 1824-1827, 2002
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204184565120
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- NII論文ID
- 210000103784
- 110001979087
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2002JPSJ...71.1824T
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 6266411
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可