Spontaneous plaquette formation in the SU(4) Spin-Orbital ladder

Abstract

The low-energy properties of the SU(4) spin-orbital model on a two-leg ladder are studied by a variety of analytical and numerical techniques. Like in the case of SU(2) models, there is a singlet-multiplet gap in the spectrum, but the ground-state is two-fold degenerate. An interpretation in terms of SU(4)-singlet plaquettes is proposed. The implications for general two-dimensional lattices are outlined.

4 pages, 5 Postscript figures

References in corpus (5)

• SU(4) Theory for Spin Systems with Orbital Degeneracy
• Thermodynamics of the one-dimensional SU(4) symmetric spin-orbital model
• Metal-insulator transition in the one-dimensional SU(N) Hubbard model
• Spin liquid ground state in a two dimensional non-frustrated spin model
• Elementary excitations of the symmetric spin-orbital model: The XY limit

Cited by in corpus (41)

• Spin-orbital quantum liquid on the honeycomb lattice
• Simultaneous dimerization and SU(4) symmetry breaking of 4-color fermions on the square lattice
• Non-perturbative methodologies for low-dimensional strongly-correlated systems: From non-abelian bosonization to truncated spectrum methods
• Spin-Orbital Entanglement and Violation of the Goodenough-Kanamori Rules
• Orbital ordering in frustrated Jahn-Teller systems
• Resonating plaquette phases in large spin cold atom systems
• Spin--orbital interaction for face-sharing octahedra: Realization of a highly symmetric SU(4) model
• Exact Diagonalization of Heisenberg SU(N) models
• Integrable models and quantum spin ladders: comparison between theory and experiment for the strong coupling ladder compounds
• Exact spontaneous plaquette ground states for high-spin ladder models
• Quantum Phase Transition in the SU(4) Spin-Orbital Model on the Triangular Lattice
• Entropy dependence of correlations in one-dimensional SU(N) antiferromagnets
• Quantum spin models for the SU(n)_1 Wess-Zumino-Witten model
• Ordering and Spin Waves in NaNiO2 : A Stacked Quantum Ferromagnet
• Flux crystals, Majorana metals, and flat bands in exactly solvable spin-orbital liquids
• Quantum magnetism of ultra-cold fermion systems with the symplectic symmetry
• Resonating singlet valence plaquettes
• Maximized Orbital and Spin Kondo effects in a single-electron transistor
• SU(4)-symmetric spin-orbital liquids on the hyperhoneycomb lattice
• Scalar chiral ground states of spin ladders with four-spin exchanges
• Unified Phase Diagram of Antiferromagnetic SU(N) Spin Ladders
• Multiflavor Mott insulators in quantum materials and ultracold atoms
• Variational Monte-Carlo investigation of SU($N$) Heisenberg chains
• Emergent Fermi surface in a triangular-lattice SU(4) quantum antiferromagnet
• Two-dimensional gapless spin liquids in frustrated SU(N) quantum magnets
• Structure of Spin Correlations in High Temperature SU($N$) Quantum Magnets
• Tetramerization in a SU(4)-Heisenberg model on the honeycomb lattice
• Planar spin exchange in LiNiO_2
• Unveiling a critical stripy state in the triangular-lattice SU(4) spin-orbital model
• Coloron excitations of the SU(3) Haldane--Shastry model
• Symmetry-protected topological phases in two-leg SU(N) spin ladder with unequal spins
• Two-leg SU(2n) spin ladder: A low-energy effective field theory approach
• Twisting the Dirac cones of the SU(4) spin-orbital liquid on the honeycomb lattice
• Phase Diagram of the Spin-Orbital model on the Square Lattice
• Formation of energy gap in higher dimensional spin-orbital liquids
• SU(4) Spin-Orbital Two-Leg Ladder, Square and Triangle Lattices
• Contractor renormalization group theory of the SU($N$) chains and ladders
• Magnetic and orbital correlations in a two-site molecule
• Order by disorder in a four flavor Mott-insulator on the fcc lattice
• Photo-induced charge, spin, and orbital order in the two-orbital extended Hubbard model
• Ground-state phase diagram of the SU($4$) Heisenberg model on a plaquette lattice