Phase diagram of the J(1)-J(2) Heisenberg model on the kagome lattice

Kolley, F., Depenbrock, S., McCulloch, I. P., Schollwoeck, U. and Alba, V. (2015) Phase diagram of the J(1)-J(2) Heisenberg model on the kagome lattice. Physical Review B, 91 10: 104418-104418. doi:10.1103/PhysRevB.91.104418

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Author Kolley, F.
Depenbrock, S.
McCulloch, I. P.
Schollwoeck, U.
Alba, V.
Title Phase diagram of the J(1)-J(2) Heisenberg model on the kagome lattice
Journal name Physical Review B   Check publisher's open access policy
ISSN 1098-0121
Publication date 2015-03-01
Year available 2015
Sub-type Article (original research)
DOI 10.1103/PhysRevB.91.104418
Open Access Status File (Publisher version)
Volume 91
Issue 10
Start page 104418
End page 104418
Total pages 8
Place of publication College Park, MD United States
Publisher American Physical Society
Language eng
Formatted abstract
We perform an extensive density-matrix renormalization-group study of the ground-state phase diagram of the spin-1/2J1−J2 Heisenberg model on the kagome lattice. We focus on the region of the phase diagram around the kagome Heisenberg antiferromagnet, i.e., at J2=0. We investigate the static spin structure factor, the magnetic correlation lengths, and the spin gaps. Our results are consistent with the absence of magnetic order in a narrow region around J2≈0, although strong finite-size effects do not allow us to accurately determine the phase boundaries. This result is in agreement with the presence of an extended spin-liquid region, as it has been proposed recently. Outside the disordered region, we find that for ferromagnetic and antiferromagnetic J2, the ground state displays signatures of the magnetic order of the 3√×3√ and the q=0 type, respectively. Finally, we focus on the structure of the entanglement spectrum (ES) in the q=0 ordered phase. We discuss the importance of the choice of the bipartition on the finite-size structure of the ES.
Keyword Matrix Renormalization-Group
Chiral Spin Liquid
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2016 Collection
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Citation counts: TR Web of Science Citation Count  Cited 15 times in Thomson Reuters Web of Science Article | Citations
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