Exact stripe, checkerboard, and droplet ground states in two dimensions

Abstract

Exact static nondegenerate stripe and checkerboard ground states are obtained in a two-dimensional generalized periodic Anderson model, for a broad concentration range below quarter filling. The random droplet states, also present in the degenerate ground state, are eliminated by extending the Hamiltonian with terms of different physical origin such as dimerization, periodic charge displacements, density waves, or distorsion lines.

12 pages, 8 figures

References in corpus (12)

• How to detect fluctuating order in the high-temperature superconductors
• A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
• Quantum Magnetic Excitations from Stripes in Copper-Oxide Superconductors
• Stripes on a 6-Leg Hubbard Ladder
• Exact Insulating and Conducting Ground States of a Periodic Anderson Model in Three Dimensions
• Exact solutions for the periodic Anderson model in 2D: A Non-Fermi liquid state in normal phase
• Exact Ground States of the Periodic Anderson Model in D=3 Dimensions
• Exact multi-electronic electron-concentration dependent ground-states for disordered two-dimensional two-band systems in presence of disordered hoppings and finite on-site random interactions
• The types of Mott insulator
• Plaquette operators used in the rigorous study of ground-states of the Periodic Anderson Model in $D=2$ dimensions
• Exact ground-state for the periodic Anderson model in D=2 dimensions at finite value of the interaction and absence of the direct hopping in the correlated f-band
• NMR evidence for two-step phase-separation in Nd_{1.85}Ce_{0.15}CuO_{4-delta}

Cited by in corpus (13)

• Delocalization effect of the Hubbard repulsion in exact terms and two dimensions
• Formation and fragmentation of quantum droplets in a quasi-one dimensional dipolar Bose gas
• Exact ground states of correlated electrons on pentagon chains
• Correlation and confinement induced itinerant ferromagnetism in chain structures
• Interaction created effective flat bands in conducting polymers
• Ferromagnetism without flat bands in thin armchair nanoribbons
• Pentagon chain in external fields
• Nanograin ferromagnets from non-magnetic bulk materials: the case of gold nanoclusters
• Exact results relating spin-orbit interactions in two dimensional strongly correlated systems
• Flat band ferromagnetism without connectivity conditions in the flat band
• Quadratic operators used in deducing exact ground states for correlated systems: ferromagnetism at half filling provided by a dispersive band
• Itinerant surfaces with spin-orbit couplings, correlations and external magnetic fields: Exact results
• Lattice Theoretical Approach in Strongly Correlated Electron Systems