| Re: Berry Curvature ( No.1 )|
- Date: 2023/04/13 19:37
- Name: Hikaru Sawahata
- Dear Mitra
Hi, thank you for using my calB and Z2FH code.
In Bi(111) case, your result of C=0 and Z2=1 is correct.
Chern number characterize a quantum anomalous Hall system, so it must be 0 on the non-magnetic system. On the other hand,
Z2 invariant characterize a quantum spin Hall system, and it is defined on the non-magnetic system (time-reversal symmetric system).
>I thought these quantities are related to each other. How can we describe the Berry curvature of Bi(111) with Z2=1?
Please refer to these paper,