2013/04/10 by M. Grünewald, Grünewald, M., J. Kleinlein +9
Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1304.2911
12 pages, 5 figures Small additions in description of processing and magneto optic characterization
arxiv created 2013/04/24 · arxiv updated 2013/04/25
We report the successful fabrication of lateral organic spin valves with a channel length in the sub 100 nm regime. The fabication process is based on in-situ shadow evaporation under UHV conditions and therefore yields clean and oxygen-free interfaces between the ferromagnetic metallic electrodes and the organic semiconductor. The spin valve devices consist of Nickel and Cobalt-iron electrodes and the high mobility n-type organic semiconductor N,N'-bis(heptafluorobutyl)-3,4:9,10-perylene diimide. Our studies comprise fundamental investigations of the process' and materials' suitability for the fabrication of lateral spin valve devices as well as magnetotransport measurements at room temperature. The best devices exhibit a magnetoresistance of up to 50 %, the largest value for room temperature reported so far.