Magnetoresistance anisotropy of a one-dimensional superconducting niobium strip.
Phys Rev Lett
; 101(7): 077003, 2008 Aug 15.
Article
em En
| MEDLINE
| ID: mdl-18764568
ABSTRACT
We investigated confinement effects on the resistive anisotropy of a superconducting niobium strip with a rectangular cross section. When its transverse dimensions are comparable to the superconducting coherence length, the angle dependent magnetoresistances at a fixed temperature can be scaled as R(theta,H) = R(H/Hctheta) where Hctheta =Hc0(cos2theta + gamma(-2)sin2theta)(-1/2) is the angular dependent critical field, gamma is the width to thickness ratio, and Hc0 is the critical field in the thickness direction at theta=0 degrees . The results can be understood in terms of the anisotropic diamagnetic energy for a given field in a one-dimensional superconductor.
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MEDLINE
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article