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Nature of quantum spin liquids of the S= 12 Heisenberg antiferromagnet on the triangular lattice: A parallel DMRG study

Journal Article · · Physical Review. B
 [1];  [2]
  1. ShanghaiTech Univ. (China); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States); SLAC
  2. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States)
+ Show Author Affiliations
Here we study the ground-state properties of the quantum spin liquid (QSL) phases of the spin-1/2 antiferromagnetic Heisenberg model on the triangular lattice with nearest- (J1), next-nearest- (J2), and third-neighbor (J3) interactions by using density-matrix renormalization group (DMRG) method. By combining parallel DMRG with SU(2) spin rotational symmetry, we are able to obtain accurate results on large cylinders with length up to Lx=48 and circumference Ly=6–12. Our results suggest that the QSL phase of the J1-J2 Heisenberg model is gapped which is characterized by the absence of gapless mode, short-range spin-spin and dimer-dimer correlations. In the presence of J3 interaction, we find that a new critical QSL with a single gapless mode emerges. While both spin-spin and scalar chiral-chiral correlations are short-ranged, dimer-dimer correlations are quasi-long-ranged which decays as a power-law at long distances.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
2001441
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 14 Vol. 107; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (10)

FIG. 1(p. 2)figure FIG. 1
FIG. 2(p. 2)figure FIG. 2
FIG. 3(p. 3)figure FIG. 3
FIG. 4(p. 3)figure FIG. 4
FIG. 5(p. 4)figure FIG. 5
FIG. S1(p. 6)figure FIG. S1
FIG. S2(p. 7)figure FIG. S2
FIG. S3(p. 7)figure FIG. S3
FIG. S4(p. 8)figure FIG. S4
FIG. S5(p. 8)figure FIG. S5

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