TY - JOUR
T1 - Anomalous quenching of the remanent resistivity in YBCO ceramics
AU - Mogilko, Emma
AU - Schlesinger, Yehuda
AU - Burlachkov, Leonid
PY - 2000
Y1 - 2000
N2 - We report an anomalous reduction of the resistivity in certain YBCO ceramics, upon applying and consequently removing a low DC magnetic field. This phenomenon is observed just below Tc, while at lower temperatures the observed remanent resistivity is higher than the pristine, similar to the characteristic "field-on" resistivity hump. We show that this effect can be interpreted as originating in an intricate interplay of the frozen-in screening currents and the superconducting percolating current in the presence of the complex intergranular boundary system.
AB - We report an anomalous reduction of the resistivity in certain YBCO ceramics, upon applying and consequently removing a low DC magnetic field. This phenomenon is observed just below Tc, while at lower temperatures the observed remanent resistivity is higher than the pristine, similar to the characteristic "field-on" resistivity hump. We show that this effect can be interpreted as originating in an intricate interplay of the frozen-in screening currents and the superconducting percolating current in the presence of the complex intergranular boundary system.
KW - Granularity
KW - Remanent resistivity
KW - YBaCuO ceramics
UR - http://www.scopus.com/inward/record.url?scp=0033721317&partnerID=8YFLogxK
U2 - 10.1016/s0921-4526(99)02230-9
DO - 10.1016/s0921-4526(99)02230-9
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AN - SCOPUS:0033721317
SN - 0921-4526
VL - 284-288
SP - 911
EP - 912
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - PART I
ER -