Fermi Surface and Spectral Functions of a Hole Doped Spin-Fermion Model for Cuprates

Abstract

Using numerical techniques we study the spectral function $A(k,\omega )$ of a spin-fermion model for cuprates in the regime where magnetic and charge domains (stripes) are developed upon hole-doping. From $A(k,\omega )$ we study the electronic dynamics and determine the Fermi Surface (FS), which is compared with angular resolved photoemission results for $L{a}_{2-x}S{r}_{x}Cu{O}_2$. A pseudogap is observed in the density of states at the chemical potential for all finite dopings. The striped ground state appears to be metallic in this model since there is finite spectral weight at the chemical potential, but the electronic hopping seems to be stronger perpendicular to the stripes rather than along them. The band structure is not rigid, contrary to the behavior found in mean-field studies, and changes with doping. Both mid-gap (stripe induced) and valence band states determine the FS. For vertical (horizontal) stripes, a clear FS appears close to $(\pi ,0)$ $((0,\pi ))$, while no FS is observed close to $(0,\pi )$ $((\pi ,0))$. Along the diagonal direction the spectral function shows a clear quasi-particle peak close to (0,0), but its weight is reduced as the chemical potential is approached. A weak FS develops along this direction as the system is doped.

10 pages, 13 figures

References in corpus (8)

• The Fermi surface of Bi2Sr2CaCu2O8
• One-dimensional metallic behavior of the stripe phase in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Pseudogap Formation in Models for Manganites
• Stripes in Doped Antiferromagnets: Single-Particle Spectral Weight
• Electronic Structure of Stripes in Two-Dimensional Hubbard Model
• Effect of Stripes on Electronic States in Underdoped La_{2-x}Sr_xCuO_4
• Magnetic Domains and Stripes in the Spin-Fermion Model for Cuprates
• Effect of Non-Magnetic Impurities (Zn,Li) in a Hole Doped Spin-Fermion Model for Cuprates

Cited by in corpus (10)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Anisotropy of Electrical Transport in Pnictide Superconductors Studied Using Monte Carlo Simulations of the Spin-Fermion Model
• Mode-Coupling Model of Mott Gap Collapse in the Cuprates: Natural Phase Boundary for Quantum Critical Points
• Testing the Monte Carlo - Mean Field approximation in the one-band Hubbard model
• The One-Particle Spectral Function and the Local Density of States in a Phenomenological Mixed-Phase Model for High-Temperature Superconductors
• Parallelized Traveling Cluster Approximation to Study Numerically Spin-Fermion Models on Large Lattices
• Robust D-wave Pairing Correlations in a Hole-Doped Spin-Fermion Model for Cuprates
• Polaronic Aspects of the two-dimensional Ferromagnetic Kondo Model
• Effect of Adiabatic Phonons on Striped and Homogeneous Ground States
• Transport anisotropy and metal-insulator transition in striped Dirac fermion systems