One-dimensional spherical model with a phase transition

1994 ◽  
Vol 49 (5) ◽  
pp. 3665-3669 ◽  
Author(s):  
Dorje C. Brody
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Milad Jangjan ◽  
Mir Vahid Hosseini

AbstractWe theoretically report the finding of a new kind of topological phase transition between a normal insulator and a topological metal state where the closing-reopening of bandgap is accompanied by passing the Fermi level through an additional band. The resulting nontrivial topological metal phase is characterized by stable zero-energy localized edge states that exist within the full gapless bulk states. Such states living on a quasi-one-dimensional system with three sublattices per unit cell are protected by hidden inversion symmetry. While other required symmetries such as chiral, particle-hole, or full inversion symmetry are absent in the system.


2011 ◽  
Vol 84 (4) ◽  
Author(s):  
Chun-Wang Wu ◽  
Ming Gao ◽  
Zhi-Jiao Deng ◽  
Hong-Yi Dai ◽  
Ping-Xing Chen ◽  
...  

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