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Projected-Wave-Function Study of the Spin-1/2Heisenberg Model on the Kagomé Lattice

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Ran, Ying, Hermele, Michael, Lee, Patrick A., Wen, Xiao-Gang·2007·Physical Review Letters

Abstract

We perform a Gutzwiller projected-wave-function study for the spin-1/2 Heisenberg model on the Kagomé lattice to compare energies of several spin-liquid states. The result indicates that a U(1)-Dirac spin-liquid state has the lowest energy. Furthermore, even without variational parameters, the energy turns out to be very close to that found by exact diagonalization. We show that such a U(1)-Dirac state represents a quantum phase whose low-energy physics is governed by four flavors of two-component Dirac fermions coupled to a U(1) gauge field. These results are discussed in the context of recent experiments on ZnCu(3)(OH)(6)Cl(2).

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Authors
Ran, Y., Hermele, M., Lee, P. A., & Wen, X.-G.
Venue
Physical Review Letters
Published
2007-03-16
Volume
98
Issue
11
Pages
117205-117205
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W1920957234
Cited by
594
References
0
FWCI
22.74
Type
journal article
Language
en
Open access
green

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Ran, Y., Hermele, M., Lee, P. A., & Wen, X.-G. (2007). Projected-Wave-Function Study of the Spin-1/2Heisenberg Model on the Kagomé Lattice. Physical Review Letters. https://doi.org/10.1103/physrevlett.98.117205

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