Abstract
To study the Hofstadter spectrum of monolayer molybdenum disulfide (MoS2), we systematically examine the magnetic energy spectra due to various hoppings between d-orbital electrons to illustrate the link between the Bloch bands and the corresponding magnetoelectronic spectra. The magnetoelectronic spectrum shows a mirror (inversion) symmetry as a result of the particle-hole symmetry (asymmetry) in the Bloch bands. At small field, specific Landau fan diagrams can be ascribed to certain Bloch-band singularities. In the spectrum of real MoS2, we further find a breaking of spectral symmetry, the spin and valley polarization, and a flux-dependent energy gap. Our numerical results can facilitate a qualitative understanding of the topological nature of d-bands and provide a basis for exploring the Landau levels in transition-metal dichalcogenides.
Original language | English |
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Pages (from-to) | 20858-20864 |
Number of pages | 7 |
Journal | RSC Advances |
Volume | 5 |
Issue number | 27 |
DOIs | |
Publication status | Published - 2015 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- General Chemical Engineering