Pairing Correlation Effect on the Zero-Bias Tunneling Spectra of Ultrasmall Superconducting Grains.
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- Nishiura Sousuke
- Department of Applied Physics, Osaka City University, Sumiyoshi-ku, Osaka 558-8585
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- Takane Yositake
- Department of Physical Electronics, Hiroshima University, Higashi-Hiroshima 739-8527
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説明
We study the superconducting pairing correlation (SPC) effect on the resonant tunneling through an ultrasmall metallic grain with a gate electrode. The resonant conductance peaks appearing with an increase or decrease of the gate voltage are accompanied by the transition of the total electron number N on the grain, such as N ↔ N ± 1. We focus our attention on the tunneling resonance associated with an odd-N state. In the absence of the SPC effect, the structure of the zero-bias resonant conductance peak for N ↔ N - 1 is equivalent to that for N ↔ N + 1. It is shown that due to the interplay between the SPC effect and the nonuniform spacings of single-particle energy levels, we expect a notable difference between the two peak structures.
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 70 (9), 2497-2500, 2001
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
- 1390282679161461248
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- NII論文ID
- 210000103259
- 10009120249
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2001JPSJ...70.2497N
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 5919035
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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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- NDLサーチ
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