Interplay between intrinsic and emergent topological protection on interacting helical modes
Interplay between intrinsic and emergent topological protection on interacting helical modes
复制标题
相互作用的螺旋模式上固有和紧急拓扑保护之间的相互作用
DOI:
10.1103/physrevb.99.075129
复制
发表时间:
2019
影响因子:
3.7
通讯作者:
Santos R
中科院分区:
文献类型:
--
作者:
Santos R
The interplay between topology and interactions on the edge of a two-dimensional topological insulator with time-reversal symmetry is studied. We consider a simple noninteracting system of three helical channels with an inherenttopological protection and hence a zero-temperature conductance of. We show that when interactions are added to the model, the ground state exhibits two different phases as a function of the interaction parameters. One of these phases is a trivial insulator at zero temperature, as the symmetry protecting the noninteracting topological phase is spontaneously broken. In this phase there is zero conductance () at zero temperature. The other phase displays enhanced topological properties, with a topologically protected zero-temperature conductance ofand an emergentsymmetry not present in the lattice model. The neutral sector in this phase is described by a massive version ofparafermions. This state is an example of a dynamically enhanced symmetry-protected topological state.
登录
查看更多内容
影响因子:
8.6
作者:
KANE, CL;FISHER, MPA
通讯作者:
FISHER, MPA
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
S. Carr;B. Narozhny;A. Nersesyan
通讯作者:
A. Nersesyan
DOI:
10.1002/prop.201600054
发表时间:
2016
期刊:
Fortschritte der Physik
影响因子:
--
作者:
N. Kainaris;R. Santos;R. Santos;D. Gutman;S. Carr
通讯作者:
S. Carr
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
P. Lecheminant;P. Azaria;E. Boulat;S. Capponi;G. Roux;S. White
通讯作者:
S. White
影响因子:
3.7
作者:
A. Keselman;E. Berg;P. Azaria
通讯作者:
P. Azaria