Giant magnetoresistance of magnetic multilayer point contacts
نویسندگان
چکیده
منابع مشابه
Magnetoresistance of magnetite point contacts and nanoconstrictions
Point contacts of magnetite exhibit large, reversible increases of conductance by a factor of up to 5 in the presence of a small magnetic field s,10 mTd, provided the conductance is less than the quantum of conductance G0 s12 900 Vd−1. Smaller effects are found in sLa0.7Sr0.3dMnO3 and Co2Cr0.6Fe0.4Al. Comparable effects observed in magnetite nanoconstrictions milled using a focused-ion beam in ...
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Electron beam lithography and ion milling have been used to pattern sputtered Cu/Co multilayer wires ranging in width from 750 to 35 nm. Samples having Cu thicknesses which correspond to the first, second, and third antiferromagnetic coupling maxima have been measured. Contrary to expectation, enhancement in the amplitude of the giant magnetoresistance with decreasing width was not observed. © ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1999
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.60.10291