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

页码：3535 / 3538

页数：4

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