Emergence and spectral-weight transfer of electronic states in the Hubbard ladder

Abstract

The number of electronic bands is usually considered invariant regardless of the electron density in a band picture. However, in interacting systems, the spectral-weight distribution generally changes depending on the electron density, and electronic states can even emerge or disappear as the electron density changes. Here, to clarify how electronic states emerge and become dominant as the electron density changes, the spectral function of the Hubbard ladder with strong repulsion and strong intrarung hopping is studied using the non-Abelian dynamical density-matrix renormalization-group method. A mode emerging in the low-electron-density limit gains spectral weight as the electron density increases and governs the dimer Mott physics at quarter-filling. In contrast, the antibonding band, which is dominant in the low-electron-density regime, loses spectral weight and disappears at the Mott transition at half-filling, exhibiting the momentum-shifted magnetic dispersion relation in the small-doping limit. This paper identifies the origin of the electronic states responsible for the Mott transition and brings a new perspective to electronic bands by revealing the overall nature of electronic states over a wide energy and electron-density regime.

arXiv comment11 pages, 6 figures, 1 table

References in corpus (33)

• Correlated Electrons in High Temperature Superconductors
• Dynamical density-matrix renormalization-group method
• Weak Coupling Phase Diagram of the Two Chain Hubbard Model
• Correlations in a two--chain Hubbard model
• The Non-Abelian Density Matrix Renormalization Group Algorithm
• Evolution of electronic structure of doped Mott insulators - reconstruction of poles and zeros of Green's function
• Spectral function of spinless fermions on a one-dimensional lattice
• Enhanced d_{x^2-y^2} pairing correlations in the two-leg Hubbard ladder
• Phases of the infinite U Hubbard model
• Pair Correlations in Doped Hubbard Ladders
• Mott Transition in the Two-Dimensional Hubbard Model
• Dynamically dominant excitations of string solutions in the spin-1/2 antiferromagnetic Heisenberg chain in magnetic fields
• Composite-Fermion Theory for Pseudogap, Fermi Arc, Hole Pocket, and Non-Fermi-Liquid of Underdoped Cuprate Superconductors
• Spectral Properties near the Mott Transition in the One-Dimensional Hubbard Model
• Mottness in High-Temperature Copper-Oxide Superconductors
• Numerical Studies of the two-leg Hubbard ladder
• Self-energy and Fermi surface of the 2-dimensional Hubbard model
• Dynamical Properties of Two Coupled Hubbard Chains at Half-filling
• Aspects of the ground state of the $U=\infty$ Hubbard ladder
• Quasiparticles of spatially anisotropic triangular antiferromagnets in a magnetic field
• Inverse photoemission in strongly correlated electron systems
• Spectral properties near the Mott transition in the two-dimensional t-J model
• Doping evolution of charge and spin excitations in two-leg Hubbard ladders: comparing DMRG and RPA+FLEX results
• DMRG and the Two Dimensional t-J Model
• States induced in the single-particle spectrum by doping a Mott insulator
• Photoinduced correlated electron dynamics in a two-leg ladder Hubbard system
• Characteristics of the Mott transition and electronic states of high-temperature cuprate superconductors from the perspective of the Hubbard model
• The spectral function of Mott-insulating Hubbard ladders: From fractionalized excitations to coherent quasi-particles
• Relationship between single-particle excitation and spin excitation at the Mott Transition
• Dynamics of doublon-holon pairs in Hubbard two-leg ladders
• Nature of a single doped hole in two-leg Hubbard and $t$-$J$ ladders
• Spectral Properties of Interacting One-Dimensional Spinless Fermions
• Relation between high-energy quasiparticles of quasi-one-dimensional antiferromagnets in a magnetic field and a doublon of a Hubbard chain

Cited by in corpus (7)

• Matrix product state recursion methods for strongly correlated quantum systems
• Mott transition and electronic excitation of the Gutzwiller wavefunction
• Emergence of electronic modes by doping Kondo insulators in the Kondo lattice and periodic Anderson models
• Temperature-driven change in band structure reflecting spin-charge separation of Mott and Kondo insulators
• Role of surface termination in the metal-insulator transition of V${}_2$O${}_3$(0001) ultrathin films
• Emergence and evolution of electronic modes with temperature in spin-gapped Mott and Kondo insulators
• Electronic modes induced by spin and charge perturbations in Mott and Kondo insulators