Doped kagome system as exotic superconductor
Name
Ko-2009-Doped kagome system.pdf
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255.75 KB
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Author(s)
Ko, Wing Ho
Lee, Patrick A.
Wen, Xiao-Gang
Date Issued
June 2009
Journal
Physical Review B
Publisher
American Physical Society
Citation
Ko, Wing-Ho , Patrick A. Lee, and Xiao-Gang Wen. “Doped kagome system as exotic superconductor.” Physical Review B 79.21 (2009): 214502. © 2009 The American Physical Society.
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevB.79.214502
