Singlet Stripe Phases in the planar t-J Model

Abstract

The energies of singlet stripe phases in which a plane is broken up into spin liquid ladders by lines of holes, is examined. If the holes were static then patterns containing spin liquids with a finite spin gap are favored. The case of dynamic holes is treated by assembling t-J ladders oriented perpendicular to the stripes. For a wide region around $J/t\approx 1$ the hole-hole correlations in a single ladder are found to be predominantly charge density wave type but an attraction between hole pairs on adjacent ladders leads to a stripe phase. A quantum mechanical melting of the hole lines at smaller $J/t$ values leads to a Bose condensate of hole pairs, i.e. a superconducting phase.

5 pages, uuencoded compressed PostScript file including 5 figures, ETH-TH/9423

References in corpus (7)

• Correlated Electrons in High Temperature Superconductors
• Resonating Valence Bond Theory of Coupled Heisenberg Chains
• Thermodynamics and spin gap of the Heisenberg ladder calculated by the look-ahead Lanczos algorithm
• Correlations in a two--chain Hubbard model
• Pairing and Excitation Spectrum in doped t-J Ladders
• Spin Gaps in Coupled t-J Ladders
• Superconductivity in the Two-Dimensional $t$-$J$ Model at Low Hole Doping

Cited by in corpus (41)

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• Phase diagram of depleted Heisenberg model for CaV4O9
• Mechanism of High Temperature Superconductivity in a striped Hubbard Model
• d-wave resonating valence bond states of fermionic atoms in optical lattices
• Current ideas on the origin of stripes
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• Pinning of dynamic spin density wave fluctuations in the cuprate superconductors
• Quantum Monte Carlo study of the pairing correlation in the Hubbard ladder
• Phase Separation of the Two-Dimensional t-J model
• Electronic Structure of Ladder Cuprates
• Doped Antiferromagnets in High Dimension
• Dispersion of Ordered Stripe Phases in the Cuprates
• Correlation functions in the three-chain Hubbard ladder
• Quasiparticle collapsing in an anisotropic $t$-$J$ ladder
• Phase separation in t-J ladders
• On the Melting of Bosonic Stripes
• Ground-state phase diagram of the extended two-leg $t$-$J$ ladder
• Global Phase Diagram of the High Tc Cuprates
• Optical Conductivity of a t--J Ladder
• A possible phase diagram of a t-J ladder model
• Intrinsic translational symmetry breaking in a doped Mott insulator
• Dimensional Crossovers in the Doped Ladder System: Spin Gap, Superconductivity and Interladder Coherent Band Motion
• Phase Diagram of Coupled Ladders
• Breakdown of the Bloch-wave behavior for a single hole in a gapped antiferromagnet
• Single-hole dynamics in dimerized and frustrated spin-chains
• Pairing correlation in the two- and three-leg Hubbard ladders --- Renormalization and quantum Monte Carlo studies
• Spin Gap and Superconductivity in Weakly Coupled Ladders: Interladder One-particle vs. Two-particle Crossover
• Phase diagram of three-leg ladders at strong coupling along the rungs
• Possible counterintuitive enhancement of superconductivity in ladder-type cuprates by longitudinal compression
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• Superconductivity in doped two-leg ladder cuprates
• Pressure dependence of superconductivity in doped two-leg ladder cuprates
• Dynamical domain walls and spin-Peierls order in doped antiferromagnets: evidence from exact diagonalization of small clusters
• Resistivity of Doped Two-Leg Spin Ladders