Title :
Magnetoresistance anisotropy of a Bi antidot array
Author :
Strijkers, G.J. ; Yang, F.Y. ; Reich, D.H. ; Chien, C.L. ; Searson, P.C. ; Streiniker, Y.M. ; Bergman, D.J.
Author_Institution :
Dept. of Phys. & Astron., Johns Hopkins Univ., Baltimore, MD, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
We have measured the magnetoresistance of a Bi antidot array film. The magnetoresistance exhibits a pronounced angular dependence on the direction of the magnetic field, e.g., the longitudinal relative magnetoresistance at 5 K displays an angular variation between 1.8 and 3.4 in a field of 4.9 T. The effect is the result of the interference between cigar-shaped regions of strong current distortions around the voids in the Bi film. The measurements can be understood and quantitatively reproduced by theoretical calculations
Keywords :
arrays; bismuth; magnetoresistance; semimetallic thin films; voids (solid); 4.9 T; 5 K; Bi; Bi antidot array; angular dependence; film; longitudinal relative magnetoresistance; magnetic field direction; magnetoresistance anisotropy; periodic composite structures; strong current distortions; voids; Astronomy; Bismuth; Conductivity; Distortion measurement; Extraterrestrial measurements; Magnetic field measurement; Magnetic films; Magnetic materials; Magnetoresistance; Physics;
Journal_Title :
Magnetics, IEEE Transactions on
