Gapless spin-liquid phase in the kagome spin-(1)/(2) Heisenberg antiferromagnet

@article{Iqbal2013GaplessSP,
  title={Gapless spin-liquid phase in the kagome spin-(1)/(2) Heisenberg antiferromagnet},
  author={Yasir Iqbal and Federico Becca and Sandro Sorella and Didier Poilblanc},
  journal={Physical Review B},
  year={2013},
  volume={87},
  pages={060405}
}
We study the energy and the static spin structure factor of the ground state of the spin-1/2 quantum Heisenberg antiferromagnetic model on the kagome lattice. By the iterative application of a few Lanczos steps on accurate projected fermionic wave functions and the Green's function Monte Carlo technique, we find that a gapless (algebraic) U(1) Dirac spin liquid is competitive with previously proposed gapped (topological) Z2 spin liquids. By performing a finite-size extrapolation of the ground… 
Correlated spin liquids in the quantum kagome antiferromagnet at finite field: a renormalization group analysis
We analyse the antiferromagnetic spin-$1/2$ XXZ model on the kagome lattice at finite external magnetic field with the help of a nonperturbative zero-temperature renormalization group (RG) technique.
Chiral Spin Liquid on a Kagome Antiferromagnet Induced by the Dzyaloshinskii-Moriya Interaction.
TLDR
A new phase obtained from Schwinger-boson mean-field theory that is stable at small DMI is described, and which can explain the dispersionless spectrum seen in the inelastic neutron scattering experiment by Han et al.
Signatures of gapless fermionic spinons on a strip of the kagome Heisenberg antiferromagnet
Developing a complete understanding of the ground state properties of spin-1/2 Heisenberg antiferromagnets on the 2D kagome lattice remains a central challenge in the field of frustrated quantum
Competing spin liquid phases in the S = 12 Heisenberg model on the Kagome lattice
The properties of ground state of spin-2 kagome antiferromagnetic Heisenberg (KAFH) model have attracted considerable interest in the past few decades, and recent numerical simulations reported a
Critical properties of the Néel–algebraic-spin-liquid transition
The algebraic spin liquid is a long-sought-after phase of matter characterized by the absence of quasiparticle excitations, a low-energy description in terms of emergent Dirac fermions and gauge
Persistence of the gapless spin liquid in the breathing kagome Heisenberg antiferromagnet
The nature of the ground state of the spin $S=1/2$ Heisenberg antiferromagnet on the kagome lattice with breathing anisotropy (i.e., with different superexchange couplings $J_{\vartriangle}$ and
Characterization of quantum spin liquids and their spinon band structures via functional renormalization
We combine the pseudofermion functional renormalization group (PFFRG) method with a self-consistent Fock-like mean-field scheme to calculate low-energy effective theories for emergent spinon
Competing Spin Liquid Phases in the S=$\frac{1}{2}$ Heisenberg Model on the Kagome Lattice
The properties of ground state of spin-\frac{1}{2}12 kagome antiferromagnetic Heisenberg (KAFH) model have attracted considerable interest in the past few decades, and recent numerical simulations
Gapless Spin-Liquid Ground State in the S=1/2 Kagome Antiferromagnet.
TLDR
This work applies the formalism of tensor-network states, specifically the method of projected entangled simplex states, which combines infinite system size with a correct accounting for multipartite entanglement to demonstrate the ground state of the nearest-neighbor Heisenberg model is a gapless spin liquid.
...
1
2
3
4
5
...