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Published on: June 9, 2016
Large magnetoresistance of electrodeposited single-crystal bismuth thin films
1Department of Physics and Astronomy, Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA.
Abstract:
Single-crystal bismuth thin films 1 to 20 micrometers thick were fabricated by electrodeposition and suitable annealing. Magnetoresistance up to 250 percent at 300 kelvin and 380,000 percent at 5 kelvin as well as clean Shubnikov-de Haas oscillations were observed, indicative of the high quality of these films. A hybrid structure was also made that showed a large magnetoresistive effect of 30 percent at 200 oersted and a field sensitivity of 0.2 percent magnetoresistance per oersted at room temperature.
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