Abstract
We investigate theoretically and experimentally the conductivity of bismuth nanowires at low temperatures in a uniform magnetic field directed perpendicularly to the wire axis. Using the Kubo formula, we calculate the conductivity for the cases of systems with degenerate and nondegenerate carrier gas with elastic acoustic-phonon scattering of carriers. Size, temperature, and field dependence of the conductivity of a Bi quantum wire are discussed in detail. For a nanowire with nondegenerate carrier gas, the conductivity depends exponentially on a combination of field, temperature, and wire diameter. For a semimetallic Bi quantum wire can be observed the negative magnetoresistance.
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Abbreviations
- QW:
-
quantum wire,
- MR:
-
magnetoresistance
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Khamidullin, R., Brusenskaya, E., Konopko, L. et al. Conductivity of Bismuth Nanowires at Low Temperatures in Transverse Magnetic Field. J Low Temp Phys 158, 536–543 (2010). https://doi.org/10.1007/s10909-009-0041-6
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DOI: https://doi.org/10.1007/s10909-009-0041-6