| 铁磁-绝缘层-铁磁-d波超导结中的量子干涉效应对微分电导与散粒噪声的影响 |
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| 引用本文： | 董正超.铁磁-绝缘层-铁磁-d波超导结中的量子干涉效应对微分电导与散粒噪声的影响[J].物理学报,2002,51(4):894-897. |
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| 作者姓名： | 董正超 |
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| 作者单位： | 淮阴师范学院物理系,淮阴223001 |
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| 基金项目： | 江苏省教育厅自然科学基金 (批准号 :0 1KJB14 0 0 0 7)~~ |
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| 摘 要： | 通过求解BogoliubovedeGennes(BdG)方程,利用推广的BlonderTinkhamKlapwijk(BTK)理论,计算铁磁绝缘层铁磁d波超导结中的微分电导、平均电流和散粒噪声功率.研究表明,系统的微分电导和散粒噪声与平均电流的比值都随中间铁磁层厚度作周期性振荡,振荡的幅度随绝缘层势垒增高而变大,随铁磁层中磁交换劈裂的增强而变小.
关键词：
微分电导 散粒噪声 磁交换劈裂
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| 关 键 词： | 微分电导 散粒噪声 磁交换劈裂 |
| 收稿时间： | 2001-04-20 |
| 修稿时间： | 7/4/2001 12:00:00 AM |
Effects of quantum interference on differential conductance and shot noise in ferromagnet-insulator-ferromagnet-d-wave superconductor junctions |
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| Dong Zheng-Chao.Effects of quantum interference on differential conductance and shot noise in ferromagnet-insulator-ferromagnet-d-wave superconductor junctions[J].Acta Physica Sinica,2002,51(4):894-897. |
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| Authors: | Dong Zheng-Chao |
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| Abstract: | The differential conductance, average current and shot noise power in ferromagnet\|insulator\|ferromagnet\|d\|wave superconductor junctions are studied by solving the Bogoliubov\|de Gennes equations within an extended Blonder\|Tinkham\|Klapwijk scattering formulation. It is shown that both the differential conductance and the shot noise power to average current ratios oscillate with the length of the intermediate ferromagnetic layer, the oscillation amplitude increases with the increase of insulator's barrier height, and decreases with the increase of ferromagnetic exchange splitting in the ferromagnet. |
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| Keywords: | differential conductance shot noise ferromagnetic exchange splitting |
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