TY - JOUR
T1 - Spin injection into YBa₂Cu₃0₇ films
AU - Mikheenko, Pavlo
AU - Allsworth, MD
AU - Chakalov, Radoslav
AU - Colclough, Mark
AU - Kawano, K
AU - Muirhead, Christopher
PY - 2003/5/1
Y1 - 2003/5/1
N2 - We report a range of experiments designed to test the efficacy of spin polarized injection from colossal magnetoresistive material (CMR) into high temperature superconductors (HTS). These include traditional transport measurements, studies of CMR/YBCO contacts, measurements of penetration depth and studies of the effect of spin-injection on the critical state of square thin films and rings. We have used pulsed currents to minimize heating and have made comparisons with the non-magnetic homologue of CMR LaNiO3. Our experiments provide evidence that there is a measurable effect, but that it is small and mainly confined to 10-20 nm of the YBCO surface. Current gain of about 0.2 has been observed.
AB - We report a range of experiments designed to test the efficacy of spin polarized injection from colossal magnetoresistive material (CMR) into high temperature superconductors (HTS). These include traditional transport measurements, studies of CMR/YBCO contacts, measurements of penetration depth and studies of the effect of spin-injection on the critical state of square thin films and rings. We have used pulsed currents to minimize heating and have made comparisons with the non-magnetic homologue of CMR LaNiO3. Our experiments provide evidence that there is a measurable effect, but that it is small and mainly confined to 10-20 nm of the YBCO surface. Current gain of about 0.2 has been observed.
U2 - 10.1142/S0217984903005524
DO - 10.1142/S0217984903005524
M3 - Article
VL - 17
SP - 491
EP - 504
JO - Modern Physics Letters B
JF - Modern Physics Letters B
ER -