| 金属-绝缘层-铁磁/超导结的隧道谱与散粒噪声 |
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| 引用本文： | 李晓薇. 金属-绝缘层-铁磁/超导结的隧道谱与散粒噪声[J]. 低温物理学报, 2005, 27(1): 61-66 |
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| 作者姓名： | 李晓薇 |
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| 作者单位： | 淮阴师范学院物理系,江苏,淮安,223001 |
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| 摘 要： | 通过求解Bogoliubov-de Gennes(BdG)方程，利用推广的Blonder-Tinkham-Klapwijk(BTK)的理论，计算了金属-绝缘层-铁磁／超导态(N／L／FS)结的微分电导、平均电流和散粒噪声功率．研究表明：铁磁超导态中的磁交换能能使微分电导峰产生Zeeman劈裂，劈裂峰的能量问隔为2Eh，结界面势垒散射抑制隧道结的微分电导、平均电流和散粒噪声功率．
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| 关 键 词： | N/I/FS超导结 铁磁超导共存态 散粒噪声 Zeeman劈裂 |
| 修稿时间： | 2004-03-18 |
THE DIFFERENTIAL CONDUCTANCE AND SHOT NOISE IN NORMAL METAL-INSULATOR-FERROM AGNET/SUPERCONDUCTOR TUNNEL JUNCTIONS |
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| LI XIAO WEI Department op Physics,Huaiyin Normal College,JiangSu. THE DIFFERENTIAL CONDUCTANCE AND SHOT NOISE IN NORMAL METAL-INSULATOR-FERROM AGNET/SUPERCONDUCTOR TUNNEL JUNCTIONS[J]. Chinese Journal of Low Temperature Physics, 2005, 27(1): 61-66 |
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| Authors: | LI XIAO WEI Department op Physics Huaiyin Normal College JiangSu |
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| Affiliation: | LI XIAO WEI Department op Physics,Huaiyin Normal College,JiangSu 223001 |
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| Abstract: | Using Bogoliubov de Gennes equations, we obtain the self consistent equation in a ferromagnetic superconductor. In the framework of the Blonder Tinkham Klapeijk model,we present the differential conductance,average current and shot noise in the normal metal insulator ferromagnet/superconductor (N/I/FS) tunnel junctions. It is shown that the exchange energy E-h in FS can lead to the Zeeman splitting of the conductance peaks,the energy difference between the two splitting peaks is equal to 2 E-h . The differential conductances,average current and shot noise in N/I/FS are suppressed by the barrier strength. |
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| Keywords: | N/I/FS junction ferromagnetic superconductor shot noise Zeeman splitting |
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