Loading...
Please wait, while we are loading the content...
Similar Documents
Impurity states in the quantum spin Hall phase in graphene
| Content Provider | Semantic Scholar |
|---|---|
| Author | González, Jhon W. Fernández-Rossier, Joaquín Veiga, José Carlos Esteves |
| Copyright Year | 2012 |
| Abstract | Two-dimensional insulators with time-reversal symmetry can have two topologically different phases, the quantum spin Hall and the normal phase. The former is revealed by the existence of conducting edge states that are topologically protected. Here we show that the reaction to impurity, in bulk, is radically different in the two phases and can be used as a marker for the topological phase. Within the context of the Kane-Mele model for graphene, we find that strictly normalizable in-gap impurity states only occur in the quantum spin Hall phase and carry a dissipationless current whose chirality is determined by the spin and pseudospin of the residing electron. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://rua.ua.es/dspace/bitstream/10045/25243/1/2012_PhysRevB.86.115327.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Behavior Electron Graphene Quantum spin Hall effect T-symmetry |
| Content Type | Text |
| Resource Type | Article |
