Conduction channel transmissions of atomic-size aluminum contacts

被引：370
作者：
Scheer, E
Joyez, P
Esteve, D
Urbina, C
Devoret, MH
机构：
[1] Service de Physique de l’Etat Condensé, Commissariat à l’Energie Atomique, Gif-sur-Yvette Cedex
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.78.3535
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have determined the individual transmission coefficients of Al quantum point contacts containing up to six conduction channels. The determination is based on a comparison of the highly nonlinear current-voltage characteristics in the superconducting state with the predictions of the theory for a single channel superconducting contact. We find that at least two channels contribute to the transport even for contacts with conductance lower than the conductance quantum.
引用
收藏
页码：3535 / 3538
页数：4
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