Magnetization-orientation dependence of the superconducting transition temperature in the ferromagnet-superconductor-ferromagnet system: CuNi/Nb/CuNi

The superconducting critical temperature (T(c)) of ferromagnet-superconductor-ferromagnet systems has been predicted to exhibit a dependence on the magnetization orientation of the ferromagnetic layers such that T(AP)(c)>T(P)(c) for parallel (P) and antiparallel (AP) configurations of the two fer...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2002-12, Vol.89 (26), p.267001-267001
Main Authors: Gu, J Y, You, C-Y, Jiang, J S, Pearson, J, Bazaliy, Ya B, Bader, S D
Format: Article
Language:English
Subjects:
CRITICAL TEMPERATURE
FERROMAGNETIC MATERIALS
FORECASTING
FUNCTIONS
LAYERS
MAGNETIC FIELDS
MAGNETIZATION
MAGNETRONS
MATERIALS SCIENCE
ORIENTATION
SPUTTERING
TRANSITION TEMPERATURE
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The superconducting critical temperature (T(c)) of ferromagnet-superconductor-ferromagnet systems has been predicted to exhibit a dependence on the magnetization orientation of the ferromagnetic layers such that T(AP)(c)>T(P)(c) for parallel (P) and antiparallel (AP) configurations of the two ferromagnetic layers. We have grown CuNi/Nb/CuNi films via magnetron sputtering and confirmed the theoretical prediction by measuring the resistance of the system as a function of temperature and magnetic field. We find an approximately 25% resistance drop occurs near T(c) in Cu0.47Ni0.53(5 nm)/Nb(18)/CuNi(5) when the two CuNi layers change their magnetization directions from parallel to antiparallel, whereas there is no corresponding resistance change in the normal state.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.89.267001