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Fabricating van der Waals Heterostructures with Precise Rotational Alignment
Published on: July 5, 2019
Anomalous magneto-transport properties of bilayer phosphorene
Jhao-Ying Wu1, Wu-Pei Su2, Godfrey Gumbs3
1Center of General Studies, National Kaohsiung University of Science and Technology, Kaohsiung, 811, Taiwan. yarst5@gmail.com.
Abstract:
The magneto-transport properties of phosphorene are investigated by employing the generalized tight-binding model to calculate the energy bands. For bilayer phosphorene, a composite magnetic and electric field is shown to induce a feature-rich Landau level (LL) spectrum which includes two subgroups of low-lying LLs. The two subgroups possess distinct features in level spacings, quantum numbers, as well as field dependencies. These together lead to anomalous quantum Hall (QH) conductivities which include a well-shape, staircase and composite quantum structures with steps having varying heights and widths. The Fermi energy-magnetic field-Hall conductivity (EF-Bz-σxy) and Fermi energy-electric field-Hall conductivity (EF-Ez-σxy) phase diagrams clearly exhibit oscillatory behaviors and cross-over from integer to half-integer QH effect. The predicted results should be verifiable by magneto-transport measurements in a dual-gated system.
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