Abstract
AbstractBulk bismuth has a complex Landau spectrum. The small effective masses and the large g-factors are anisotropic. The chemical potential drifts at high magnetic fields. Moreover, twin boundaries further complexify the interpretation of the data by producing extra anomalies in the extreme quantum limit. Here, we present a study of angle dependence of magnetoresistance up to 65 T in bismuth complemented with Nernst, ultrasound, and magneto-optic data. All observed anomalies can be explained in a single-particle picture of a sample consisting of two twinned crystals tilted by 108° and with two adjacent crystals keeping their own chemical potentials despite a shift between chemical potentials as large as 68 meV at 65 T. This implies an energy barrier between adjacent twinned crystals reminiscent of a metal- semiconductor Schottky barrier or a p-n junction. We argue that this barrier is built by accumulating charge carriers of opposite signs across a twin boundary.
Publisher
Springer Science and Business Media LLC
Reference65 articles.
1. Dresselhaus, M. Electronic properties of the group V semimetals. J. Phys. Chem. Solids 32, Suppl.1, 3 (1971).
2. Edel’man, V. S. Properties of electrons in bismuth. Soviet Phys. Uspekhi 10, 819 (1977).
3. Issi, J. P. Low temperature transport properties of the group V semimetals. Aust. J. Phys. 32, 585 (1979).
4. Fuseya, Y., Ogata, M. & Fukuyama, H. Transport properties and diamagnetism of Dirac electrons in bismuth. J. Phys. Soc. Jpn. 84, 012001 (2015).
5. Dhillon, J. S. & Shoenberg, D. The de Haas-van Alphen effect III. experiments at fields up to 32 kG. Philos. Trans. R. Soc. Lond. Ser. A, Math. Phys. Sci. 248, 1 (1955).
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