2005/08/22 by Sayani Majumdar, Himadri S. Majumdar, Majumdar, Sayani +5
Chemistry · Energy · Engineering · #Electrocatalysts for Energy Conversion #FOS: Physical sciences #Fuel Cells and Related Materials #Materials Science (cond-mat.mtrl-sci) #Organometallic Complex Synthesis and Catalysis
paper · pdf · doi:10.48550/arxiv.cond-mat/0508510
openalex publication_date 2005/08/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report giant magnetoresistance up to 150 percent at low bias current and low temperature as well as room temperature magnetoresistance in polymeric spin-valves having the structure LSMO/conjugated polymer/Co. The conjugated polymers, regiorandom and regioregular P3HT were used as the spacer materials. We observed an asymmetric bias voltage dependence of different devices and additional, hitherto unseen, peaks in MR vs. magnetic field plot with low bias currents measurements that we attribute to local magnetic moments due to spin-trapping in the defects in the spacer material. Also, various spacer thicknesses led to variation of magnetoresistance within a certain temperature range.