Communications in Physics 29, 293-304 (2019)

ISSN: 0868-3166

EXOTIC STATES EMERGED BY SPIN-ORBIT COUPLING, LATTICE MODULATION AND MAGNETIC FIELD IN LIEB NANO-RIBBONS

NGUYEN DUONG BO, NGUYEN HONG SON, AND TRAN MINH TIEN

The Lieb nano-ribons with the spin-orbit coupling, the lattice modulation and the magnetic field are exactly studied. They are constructed from the Lieb lattice with open boundaries in a direction. The interplay between the spin-orbit coupling, the lattice modulation and the magnetic field emerges various exotic ground states. With certain conditions of the spin-orbit coupling, the lattice modulation, the magnetic field and filling the ground state becomes half metallic or half topological. In the half metallic ground state, one spin component is metallic, while the other spin component is insulating. In the half topological ground state, one spin component is topological, while the other spin component is topologically trivial. The model exhibits very rich phase diagram.

DOI: 10.15625/0868-3166/29/3SI/14285

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