Topological multiferroic phases in the extended Kane-Mele-Hubbard model in the Hofstadter regime

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 18
  • Download : 0
We investigate the new quantum phases on the extended Kane-Mele-Hubbard model of honeycomb lattice in the Hofstadter regime. In this regime, the orbital motion of the electrons can induce various topological phases with spontaneously broken symmetries when the spin-orbit coupling and electron correlations coexist. Here, we consider the interaction effects in the Kane-Mele model and discuss possible phases in the presence of magnetic field at integer fillings of electrons. In particular, focusing on the 2 pi/3 magnetic flux per plaquette, the realization of numerous quantum phases are discussed within the mean-field framework: insulator with coplanar magnetic ordering, ferrimagnetic Chern insulator with nematic charge order, ferrimagnetic-ferrielectric Chern insulators, etc. Many of these phase transitions are also accompanied with a change in the topological invariants of the system. Based on our theoretical study, we propose topological multiferroic phases with a scope of realization in 2D van-der Waals materials and optical lattice systems where a significant interplay of magnetic field, spin-orbit coupling, and interactions can be engineered.
Publisher
AMER PHYSICAL SOC
Issue Date
2018-12
Language
English
Article Type
Article
Citation

PHYSICAL REVIEW B, v.98, no.23, pp.235124

ISSN
2469-9950
DOI
10.1103/PhysRevB.98.235124
URI
http://hdl.handle.net/10203/249003
Appears in Collection
PH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0