Show simple item record Hu, Wen-Jun en Gong, Shou-Shu en Becca, Federico en Sheng, D. N. en 2018-07-23T22:47:45Z 2018-07-23T22:47:45Z 2015 en
dc.identifier.citation Physical Review B 92(20), 201105R. (2015) en
dc.identifier.issn 1098-0121 en
dc.identifier.uri en
dc.description.abstract By using the variational Monte Carlo technique, we study the spin-12 XXZ antiferromagnetic model (with easy-plane anisotropy) on the kagome lattice. A class of Gutzwiller projected fermionic states with a spin Jastrow factor is considered to describe either spin liquids [with U(1) or Z2 symmetry] or magnetically ordered phases [with q=(0,0) or q=(4π/3,0)]. We find that the magnetic states are not stable in the thermodynamic limit. Moreover, there is no energy gain to break the gauge symmetry from U(1) to Z2 within the spin-liquid states, as previously found in the Heisenberg model. The best variational wave function is therefore the U(1) Dirac state, supplemented by the spin Jastrow factor. Furthermore, a vanishing S=2 spin gap is obtained at the variational level, in the whole regime from the XY to the Heisenberg model. en
dc.format.extent 5 pages en
dc.language.iso en en
dc.publisher American Physical Society en
dc.relation.uri en
dc.rights copyright 2015 American Physical Society en
dc.subject Condensed Matter - Strongly Correlated Electrons en
dc.title Variational Monte Carlo Study Of A Gapless Spin Liquid In The Spin- 1/2 XXZ Antiferromagnetic Model On The Kagome Lattice en
dc.type Article en

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