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Large Magnetoresistance of Electrodeposited Single-Crystal Bismuth Thin Films

Science  21 May 1999:
Vol. 284, Issue 5418, pp. 1335-1337
DOI: 10.1126/science.284.5418.1335

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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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