摘要
We show that,assisted by the Peierls transition of lattice,as a quasi-one dimensional(Q1D) tight binding system,a M¨obius molecular device can behave as a simple topological insulator.With the Peierls phase transition to form a domain wall,the solitonary zero modes exist as the ground state of this electron-phonon hybrid system,which is protected by the Z_2 topology of the M¨obius strip.The robustness of the ground state prevents these degenerate zero modes from their energy spectrum splitting caused by any perturbation.
作者
Zhi-Rui Gong
龚志瑞;宋智;孙昌璞(College of Physics and Energy, Shenzhen University, Shenzhen 518060, China Beijing Computational Science Research Center, Beijing 100084, China 3Department of Physics, Nankai University, Tianjin 300071, China)
基金
Supported by the National Natural Science Foundation of China under Grant No.11504241
the Natural Science Foundation of Shenzhen University under Grant No.201551
