Spontaneous deformation of the Fermi surface due to strong correlation in the two-dimensional t-J model

Abstract

Fermi surface of the two-dimensional t-J model is studied using the variational Monte Carlo method. We study the Gutzwiller projected d-wave superconducting state with an additional variational parameter t'_v corresponding to the next-nearest neighbor hopping term. It is found that the finite t'_v<0 gives the lowest variational energy in the wide range of hole-doping rates. The obtained momentum distribution function shows that the Fermi surface deforms spontaneously. It is also shown that the van Hove singularity is always located very close to the Fermi energy. Using the Gutzwiller approximation, we show that this spontaneous deformation is due to the Gutzwiller projection operator or the strong correlation.

4 pages, 3 eps figures, revtex

Cited by in corpus (30)

• Generalized Lanczos Algorithm for Variational Quantum Monte Carlo
• Superconductivity in CoO${}_2$ Layers and the Resonating Valence Bond Mean Field Theory of the Triangular Lattice t-J model
• High Tc Superconductors -- A Variational Theory of the Superconducting State
• Variational Monte Carlo Method Combined with Quantum-Number Projection and Multi-Variable Optimization
• Mott Transitions and d-wave Superconductivity in Half-Filled-Band Hubbard Model on Square Lattice with Geometric Frustration
• Crossover between BCS Superconductor and Doped Mott Insulator of d-wave Pairing State in Two-Dimensional Hubbard Model
• Superconductivity and a Mott Transition in a Hubbard Model on an Anisotropic Triangular Lattice
• Pairing and superconductivity driven by strong quasiparticle renormalization in two-dimensional organic charge transfer salts
• Deformation of the Fermi surface in the extended Hubbard model
• Time-dependent many-variable variational Monte Carlo method for nonequilibrium strongly correlated electron systems
• Vibronic mechanism of high-Tc superconductivity
• The Full Mottness
• Crossover from weakly to strongly correlated regions in the two-dimensional Hubbard model -- Off-diagonal wave function Monte Carlo studies of Hubbard model II --
• Variational Monte Carlo Method for Electron-Phonon Coupled Systems
• Combining symmetry breaking and restoration with configuration interaction: a highly accurate many-body scheme applied to the pairing Hamiltonian
• Staggered Flux State in Two-Dimensional Hubbard Models
• Interaction induced collapse of a section of the Fermi sea in in the zig-zag Hubbard ladder
• Band-Renormalization Effects and Predominant Antiferromagnetic Order in Two-Dimensional Hubbard Model
• Quasiparticle spectral weights of Gutzwiller-projected high T_c superconductors
• Gutzwiller wave function on a quantum computer using a discrete Hubbard-Stratonovich transformation
• Microscopic description of d-wave superconductivity by Van Hove nesting in the Hubbard model
• Phase Separation Models for Cuprate Stripe Arrays
• Interaction induced Fermi-surface renormalization in the $t_1-t_2$ Hubbard model close to the Mott-Hubbard transition
• Spontaneous symmetry breaking in correlated wave functions
• Anisotropy on the Fermi Surface of the Two-Dimensional Hubbard Model
• Predominant Magnetic States in Hubbard Model on Anisotropic Triangular Lattices
• Superconducting and pseudogap phases from scaling near a Van Hove singularity
• SU(2) approach to the pseudogap phase of high-temperature superconductors: electronic spectral functions
• Correlation effects on the Fermi surface of the two-dimensional Hubbard model
• Preparing the Gutzwiller wave function for attractive SU(3) fermions on a quantum computer