Abstract
The longitudinal and transverse magnetoresistance to fields of 19 Tesla and 4.2 K has been measured for bismuth films ranging in thickness from 0.01 to 2 μm. We have observed a pronounced maximum in the longitudinal magnetoresistance which is thickness dependent. We compare these results with classical size effect theories for the longitudinal magnetoresistance in terms of magnetic-field-dependent electron scattering at grain and film boundaries. Measurements of the longitudinal magnetoresistance to 38 Tesla show a quenching of the classical size effect in the high field limit. This result strongly supports our analysis.
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Work supported by NSF grant #DMR 8113456
Supported by the National Science Foundation
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Lerner, C.M., Ma, Y.P., Brooks, J.S. et al. Magnetoresistivity of bismuth films in magnetic fields to 19 Tesla. Appl. Phys. A 52, 433–437 (1991). https://doi.org/10.1007/BF00323655
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DOI: https://doi.org/10.1007/BF00323655