Journal
PHYSICAL REVIEW B
Volume 84, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.094419
Keywords
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Funding
- National Science Foundation [DMR-0757145]
- MURI, AFOSR
- Austrian Science Fund (FWF) [J 3077-N16]
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We present a projective symmetry group (PSG) analysis of the spinless excitations of Z(2) spin liquids on the kagome lattice. In the simplest case, vortices carrying Z(2) magnetic flux (visons) are shown to transform under the 48 element group GL(2,Z(3)). Alternative exchange couplings can also lead to a second case with visons transforming under 288-element group GL(2,Z(3)) x D-3. We study the quantum phase transition in which visons condense into confining states with valence bond solid order. The critical field theories and confining states are classified using the vison PSGs.
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