Doped kagome system as exotic superconductor
A Chern-Simons theory for the doped spin-1/2 kagome system is constructed, from which it is shown that the system is an exotic superconductor that breaks time-reversal symmetry. It is also shown that the system carries minimal vortices of flux hc/4e (as opposed to the usual hc/2e in conventional sup...
| Huvudupphovsmän: | , , |
|---|---|
| Övriga upphovsmän: | |
| Materialtyp: | Artikel |
| Språk: | en_US |
| Publicerad: |
American Physical Society
2010
|
| Länkar: | http://hdl.handle.net/1721.1/51740 https://orcid.org/0000-0002-5874-581X https://orcid.org/0000-0001-7809-8157 |
| Sammanfattning: | A Chern-Simons theory for the doped spin-1/2 kagome system is constructed, from which it is shown that the system is an exotic superconductor that breaks time-reversal symmetry. It is also shown that the system carries minimal vortices of flux hc/4e (as opposed to the usual hc/2e in conventional superconductors) and contains fractional quasiparticles (including fermionic quasiparticles with semionic mutual statistics and spin-1/2 quasiparticles with bosonic self-statistics) in addition to the usual spin-1/2 fermionic Bogoliubov quasiparticles. Two Chern-Simons theories—one with an auxiliary gauge field kept and one with the auxiliary field and a redundant matter field directly eliminated—are presented and shown to be consistent with each other. |
|---|