Phase diagram of the two-dimensional t--J model at low doping

Abstract

The phase diagram of the planar t--J model at small hole doping is investigated by finite size scaling of exact diagonalisation data of NXN clusters (up to 26). Hole-droplet binding energies, compressibility and static spin and charge correlations are calculated. Short range antiferromagnetic correlations can produce attractive forces between holes leading to a very rich phase diagram including a liquid of d-wave hole pairs (for $J/t\gtrsim 0.2$), a liquid of hole droplets (quartets) for larger J/t ratios ($J/t\gtrsim 0.5$) and, at even larger coupling J/t, an instability towards phase separation.

3 pages, latex, 5 postscript figures, uuencoded

References in corpus (9)

• Correlated Electrons in High Temperature Superconductors
• Indications of d_{x^2 - y^2} Superconductivity in the Two Dimensional t-J Model
• Evidence for Spin-Charge Separation in the Two-Dimensional T-J Model
• Dynamical Properties of a Single Hole in an Antiferromagnet
• Binding of holes and pair spectral function in the t-J model
• Bound states of holes in an antiferromagnet
• On the Internal Structure of the Singlet d${}_{X^2-Y^2}$ Hole Pair in an Antiferromagnet
• Spin bags in the doped t-J model
• Exact diagonalisation studies of strongly correlated 2D lattice fermions

Cited by in corpus (26)

• Theory of Intertwined Orders in High Temperature Superconductors
• Generalized Lanczos Algorithm for Variational Quantum Monte Carlo
• d-wave superconductivity near charge instabilities
• Phase Diagram and Pairing Symmetry of the Two-Dimensional t-J Model by a Variation Theory
• Phase separation and stripe formation in the 2D t-J model: a comparison of numerical results
• Phase separation at all interaction strengths in the t-J model
• Green Function Monte Carlo with Stochastic Reconfiguration: an effective remedy for the sign problem disease
• Stripes and the t-J model
• Molecular superfluid phase in systems of one-dimensional multicomponent fermionic cold atoms
• Ground State Properties of the Two-Dimensional t-J Model
• Sublattice Coding Algorithm and Distributed Memory Parallelization for Large-Scale Exact Diagonalizations of Quantum Many-Body Systems
• Single-particle versus pair condensation of hard-core bosons with correlated hopping
• Green's Function Monte Carlo for Lattice Fermions: Application to the t-J Model
• Phase Separation of the Two-Dimensional t-J model
• Finite compressibility in the low-doping region of the two-dimensional $t-J$ model
• Stripe as an effective one-dimensional band of composite excitations
• Phase separation in t-J ladders
• Studies of one- and two-hole states in the 2D t-J model via series expansions
• Doped Singlet-Pair Crystal in the Hubbard model on the checkerboard lattice
• Phase Separation Based on U(1) Slave-boson Functional Integral Approach to the t-J Model
• Revisit Phase Separation of the Two-Dimensional $t-J$ model by the Power-Lanczos Method
• Stripes due to the next-nearest neighbor exchange in high-Tc cuprates
• A generalized effective spin-chain formalism for strongly interacting spinor gases in optical lattice
• Phase Separation and Three-site Hopping in the 2-dimensional t-J Model
• Coexistence of d_{x^2-y^2}-Wave Superconductivity and Antiferromagnetism Induced by a Staggered Field
• Single and Many Particle Correlation Functions and Uniform Phase Bases for Strongly Correlated Systems