TY - JOUR
T1 - Asymmetric nonlinear differential resistance of mesoscopic aufe spin-glass wires
AU - Eom, J.
AU - Neuttiens, G.
AU - Strunk, C.
AU - Van Haesendonck, C.
AU - Bruynseraede, Y.
AU - Chandrasekhar, V.
PY - 1996
Y1 - 1996
N2 - We have measured the differential resistance R = dV/dI of mesoscopic AuFe wires as a function of temperature T and dc current bias I.R(T) shows a maximum at a temperature Tm ∼1−4K, consistent with the onset of spin-glass order in these films. At temperatures T < Tm, R(I) also shows a maximum; however, R(I) is asymmetric in I, the asymmetry increasing with decreasing temperature. The asymmetry is sample specific, sensitive to the four terminal measurement configuration, and is associated with the presence of magnetic impurities in the samples.
AB - We have measured the differential resistance R = dV/dI of mesoscopic AuFe wires as a function of temperature T and dc current bias I.R(T) shows a maximum at a temperature Tm ∼1−4K, consistent with the onset of spin-glass order in these films. At temperatures T < Tm, R(I) also shows a maximum; however, R(I) is asymmetric in I, the asymmetry increasing with decreasing temperature. The asymmetry is sample specific, sensitive to the four terminal measurement configuration, and is associated with the presence of magnetic impurities in the samples.
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U2 - 10.1103/PhysRevLett.77.2276
DO - 10.1103/PhysRevLett.77.2276
M3 - Article
C2 - 10061903
AN - SCOPUS:0006248991
VL - 77
SP - 2276
EP - 2279
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
ER -