All Questions
5
questions
4
votes
2
answers
267
views
Why are topological materials/phases "exotic"?
From what I understand, when a system has topological order, any local perturbation doesn't change the phases and thus its properties. This would suggest that it should be really easy to find ...
- 423
4
votes
0
answers
204
views
Gapless modes at the boundary between topological insulator and normal insulator
I am currently learning about topology in condensed matter physics. I think I understand most of how topological indeces come about and differences between Z and Z2 indeces and the symmetries that ...
- 93
3
votes
0
answers
164
views
What is the physical mechanism of the topological phase transition driven by temperature?
The topological property of topological insulators (TIs) is characterized by the non-trivial topological invariants of their band structures, such as $Z_{2}$ topological invariants. While it's clearly ...
- 129
6
votes
0
answers
341
views
What is the different between topological order and Landau's order in a system
I have thought about topological order for a long time, but I am still confused it.
Roughly speaking in my understanding, the topological state is the eigen-state of some special symmetry such time ...
- 1,191
5
votes
0
answers
256
views
Topolgical insulators order parameter
For topological insulators
Is there any way to define order parameter for topological phase transitions?
- 331