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arXiv · 1312.6469

Arbitrary Chern number generation in the three-band model from momentum space

Soo-Yong Lee·Jin-Hong Park·Gyungchoon Go·Jung Hoon Han
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Abstract

A simple, general rule for generating a three-band model with arbitrary Chern numbers is given. The rule is based on the idea of monopole charge-changing unitary operations and can be realized by two types of simple unitary operations on the original Hamiltonian. A pair of monopole charges are required to produce desired topological numbers in the three-band model. The set of rules presented here offers a way to produce lattice models of any desired Chern numbers for three-sublattice situations.

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Soo-Yong Lee, Jin-Hong Park, Gyungchoon Go, Jung Hoon Han. 2013-12-23. Arbitrary Chern number generation in the three-band model from momentum space. https://arxiv.org/abs/1312.6469

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