Interference Effect in Multilevel Transport through a Quantum Dot
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- Aikawa Hisashi
- Institute for Solid State Physics, University of Tokyo
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- Kobayashi Kensuke
- Institute for Solid State Physics, University of Tokyo
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- Sano Akira
- Institute for Solid State Physics, University of Tokyo
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- Katsumoto Shingo
- Institute for Solid State Physics, University of Tokyo
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- Iye Yasuhiro
- Institute for Solid State Physics, University of Tokyo
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説明
We present experimental results and a model to solve the problem of “in-phase Coulomb peaks” observed in transport through a quantum dot. In the marginal region between the Coulomb-blockade and open-dot, we have observed Fano-type interference through two energy levels inside the dot, which manifest themselves in two overlapped Coulomb-diamond-like structures in the excitation spectrum. One of the two levels is strongly coupled to the leads and the phase of traversing electrons is locked to it. We have detected the phase change at the vertices and the centers of the larger diamonds through the sign of Fano’s asymmetric parameters supporting the above deduction.
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 73 (12), 3235-3238, 2004
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
- 1390001204188415744
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- NII論文ID
- 210000105180
- 110001979285
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.3235A
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 7185825
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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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