Kavli Affiliate: Gang Su
| First 5 Authors: Ze Liu, Zhi-Fan Zhang, Zhen-Gang Zhu, Gang Su,
| Summary:
The geometric properties of parameter space are mostly described by Berry
curvature and quantum metric, which are the imaginary and real part of quantum
geometric tensor, respectively. In this work, we calculate the dressed Berry
curvature and quantum metric containing eight Feynman diagrams, which are
proportional to the leading-order of the concentration of impurities. For a
two-band gapped graphene model, we find the disorder does not break the
original symmetry but decrease (increase) the absolute value of Berry curvature
and quantum metric in conduction (valence) band. We show how impurities affect
the Berry curvature and quantum metric, deepening our understanding of the
impurity effect on the electron transport properties in two-band gapped
graphene.
| Search Query: ArXiv Query: search_query=au:”Gang Su”&id_list=&start=0&max_results=3