Quantum Interference in Bismuth Nanowires: Evidence for Surface Charges |
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| Authors: | L. Konopko T. E. Huber A. Nikolaeva |
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| Affiliation: | 1. Institute of Electronic Engineering and Nanotechnologies, ASM, Chisinau, Moldova and International Laboratory of High Magnetic Fields and Low Temperatures, Wroclaw, Poland
2. Department of Chemistry, Howard University, 500 College St. N.W., Washington, DC, 20059, USA
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| Abstract: | We report the results of studies of the transverse magnetoresistance (MR) of single-crystal Bi nanowires with diameter d<80 nm. The single-crystal nanowire samples were prepared by the Taylor-Ulitovsky technique. Due to the semimetal-to-semiconductor transformation and high density of surface states with strong spin-orbit interactions, the charge carriers are confined to the conducting tube made of surface states. The non monotonic changes of transverse MR that are equidistant in a direct magnetic field were observed at low temperatures in a wide range of magnetic fields up to 14 T. The period of oscillations depends on the wire diameter d as for the case of longitudinal MR. An interpretation of transverse MR oscillations is presented. |
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