介观连接环中的持续电流。

Persistent currents in mesoscopic connected rings.

作者信息

Rabaud W, Saminadayar L, Mailly D, Hasselbach K, Benoît A, Etienne B

机构信息

Centre de Recherches sur les Très Basses Températures, Grenoble, France.

出版信息

Phys Rev Lett. 2001 Apr 2;86(14):3124-7. doi: 10.1103/PhysRevLett.86.3124.

DOI:10.1103/PhysRevLett.86.3124

PMID:11290123

Abstract

We report measurements of the low temperature magnetic response of a line of 16 GaAs/GaAlAs connected mesoscopic rings whose total length is much larger than l(straight phi). Using an on-chip micro-SQUID technology, we have measured a periodic response, with period h/e, corresponding to persistent currents in the rings of a typical amplitude of 0.40+/-0.08 nA per ring. Direct comparison with measurements on the same rings but isolated is presented.

摘要

我们报告了对一排由16个连接的介观环组成的GaAs/GaAlAs结构的低温磁响应测量结果，这些环的总长度远大于l(直磁通量子)。利用片上微超导量子干涉器件技术，我们测量到了周期为h/e的周期性响应，这对应于环中典型幅度为每个环0.40±0.08 nA的持续电流。文中还给出了与相同但孤立的环的测量结果的直接比较。