Charge imbalance observed in voltage-biased superconductor–normal tunnel junctions
Physical Review B - Condensed Matter and Materials Physics 73 巻 13 号
134507-1-134507-4 頁
2006-04-07 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Charge imbalance observed in voltage-biased superconductor–normal tunnel junctions
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| 作成者 | |
| 収録物名 |
Physical Review B - Condensed Matter and Materials Physics
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| 巻 | 73 |
| 号 | 13 |
| 開始ページ | 134507-1 |
| 終了ページ | 134507-4 |
| 抄録 |
We have studied the tunneling current of a superconductor-insulator-normal tunnel junction connected to a nonequilibrium superconductor in which nonvanishing charge imbalance is present, by injection experiments using multiterminal devices fabricated with electron beam lithography. We found that the tunneling current could be separated into excess current, due to charge imbalance, and normal current, which showed clear and different dependences on the bias voltage, as expected from the theory of charge imbalance [M. Tinkham, Phys. Rev. B 6, 1747 (1972)]. We also found in the analysis of the normal current that nonequilibrium distributions were created in the normal electrode; they were presumably caused by excitation due to hot electrons that tunneled from the nonequilibrium superconductor.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2006-04-07 |
| 権利情報 |
Copyright (c) 2006 American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.73.134507
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.65.220402
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