| Autor: |
Iadecola T; Physics Department, Boston University, Boston, Massachusetts 02215, USA., Campbell D, Chamon C, Hou CY, Jackiw R, Pi SY, Kusminskiy SV |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2013 Apr 26; Vol. 110 (17), pp. 176603. Date of Electronic Publication: 2013 Apr 25. |
| DOI: |
10.1103/PhysRevLett.110.176603 |
| Abstrakt: |
Controlling the properties of materials by driving them out of equilibrium is an exciting prospect that has only recently begun to be explored. In this Letter we give a striking theoretical example of such materials design: a tunable gap in monolayer graphene is generated by exciting a particular optical phonon. We show that the system reaches a steady state whose transport properties are the same as if the system had a static electronic gap, controllable by the driving amplitude. Moreover, the steady state displays topological phenomena: there are chiral edge currents, which circulate a fractional charge e/2 per rotation cycle, with the frequency set by the optical phonon frequency. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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