Giant mutual proximity effects in ferromagnetic/superconducting nanostructures

被引：143

作者：

Petrashov, VT ^{[1
]}

Sosnin, IA

Cox, I

Parsons, A

Troadec, C

机构：

[1] Univ London Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, Surrey, England

[2] Russian Acad Sci, Inst Microelect Technol, Chernogolovka 142432, Russia

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.83.3281

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A strong mutual influence of superconductors (S) and ferromagnetic (F) conductors in hybrid F/S (Ni/Al) nanostructures is observed. The proximity-induced conductance on the F side, Delta G, is 2 orders of magnitude larger than that predicted by theory. A crossover from positive to negative Delta G takes place upon an increase in the F/S interface barrier resistance. Reentrance of the superconductors to the normal state reciprocated by changes on the F side has been found in low applied magnetic fields with new peaks in the differential resistance as an effect of the saturation magnetization. An analysis has been developed providing a base for a numerical description of the system.

引用

页码：3281 / 3284

页数：4

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