Abstract
Galvanomagnetic effects in twisting bicrystals of Bi1–x Sb x alloys (0.07 ≤ x ≤ 0.2) at low temperatures and in magnetic fields up to 40 T are studied. It is found that, at small crystallite misorientation angles, the semiconductor–semimetal transition is induced in the central layer (~60-nm-thick) and two adjacent layers (each ~20-nm-thick) of the interface at different values of ultraquantum magnetic field. Bicrystals with large misorientation angles, being located in strong magnetic fields, exhibit quantum oscillations of the magnetoresistance and the Hall effect, thus indicating that the density of states is higher and charge carriers are heavier in the adjacent layers of the interfaces than in the crystallites. Our results show also that twisting bicrystals contain regions with different densities of quantum electronic states, which are determined by the crystallite misorientation angle and magnetic-field strength.
Similar content being viewed by others
References
L. Fu and C. L. Kane, Phys. Rev. B 76, 045302 (2007).
B. A. Bernevig, T. Hughes, and S. C. Zhang, Science 314, 1757 (2006).
J. E. Moore, Nature 464, 194 (2010), Nat. Phys. 11, 897 (2015).
L. Fu, C. L. Kane, and E. J. Mele, Phys. Rev. Lett. 98, 106803 (2007).
J. C. Y. Teo, L. Fu, and C. L. Kane, Phys. Rev. B 78, 045426 (2008).
D. Hsieh, D. Qian, L. Wray, Y. Xia, Y. Hor, R. J. Cava, and M. Z. Hasan, Nature 452, 970 (2008).
N. B. Brandt, Y. G. Ponomarev, and S. M. Chudinov, J. Low Temp. Phys. 8, 389 (1972).
E. W. Fenton, Phys. Rev. 170, 816 (1968).
N. B. Brandt and S. M. Chudinov, J. Low Temp. Phys. 8, 339 (1972).
X. L. Qi and S. C. Zhang, Rev. Mod. Phys. 83, 1057 (2011).
F. M. Muntyanu, A. Gilewski, K. Nenkov, A. Zaleski, and V. Chistol, Solid State Commun. 147, 183 (2008).
F. M. Muntyanu, A. Gilewski, K. Nenkov, K. Rogacki, A. Zaleski, G. Fuks, and V. Chistol, Phys. Lett. A 378, 1213 (2014).
F. M. Muntyanu, A. Gilewski, K. Nenkov, A. Zaleski, and V. Chistol, Phys. Rev. B 76, 014532 (2007).
F. M. Muntyanu, A. Gilewski, K. Nenkov, A. Zaleski, T. Palewski, and V. Chistol, Solid State Commun. 158, 9 (2013).
F. M. Muntyanu, Y. A. Dubkovetskii, and A. Gilevski, Phys. Solid State 46, 1822 (2004).
J. Hajdu and G. Landwehr, Strong and Ultrastrong Magnetic Fields and Their Applications, Ed. by F. Herlach (SpringerVerlag, Berlin, 1985).
J. A. van Hulst, H. M. Jaeger, and S. Radelaar, Phys. Rev. B 52, 5953 (1995).
Z. Zhu, Y. Cheng, and U. Schwingenschlögl, Sci. Rep. 4, 4025 (2014).
F. Wilczek, New J. Phys. 16, 082003 (2014).
F. Wilczek, Nature 486, 195 (2012).
S. Sasaki, M. Kriener, K. Segawa, K. Yada, Y. Tanaka, M. Sato, and Y. Ando, Phys. Rev. Lett. 107, 217001 (2011).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © F.M. Muntyanu, E.I. Gheorghitsa, A. Gilewski, V. Chistol, V. Bejan, V. Munteanu, 2017, published in Fizika i Tekhnika Poluprovodnikov, 2017, Vol. 51, No. 4, pp. 435–439.
Rights and permissions
About this article
Cite this article
Muntyanu, F.M., Gheorghitsa, E.I., Gilewski, A. et al. On the peculiarities of galvanomagnetic effects in high magnetic fields in twisting bicrystals of the 3D topological insulator Bi1–x Sb x (0.07 ≤ x ≤ 0.2). Semiconductors 51, 413–416 (2017). https://doi.org/10.1134/S1063782617040157
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063782617040157