Strong Coulomb effects in hole-doped Heisenberg chains

Abstract

Substances such as the ``telephone number compound'' Sr14Cu24O41 are intrinsically hole-doped. The involved interplay of spin and charge dynamics is a challenge for theory. In this article we propose to describe hole-doped Heisenberg spin rings by means of complete numerical diagonalization of a Heisenberg Hamiltonian that depends parametrically on hole positions and includes the screened Coulomb interaction among the holes. It is demonstrated that key observables like magnetic susceptibility, specific heat, and inelastic neutron scattering cross section depend sensitively on the dielectric constant of the screened Coulomb potential.

arXiv comment5 pages, 6 figures, to be published in Eur. Phys. J. B

References in corpus (14)

• Correlated Electrons in High Temperature Superconductors
• Electronic Liquid Crystal Phases of a Doped Mott Insulator
• Spin-Gap Proximity Effect Mechanism of High Temperature Superconductivity
• Electronic States and Magnetic Propertis of Edge-sharing Cu-O Chains
• Hole distribution for (Sr,Ca,Y,La)_14 Cu_24 O_41 ladder compounds studied by x-ray absorption spectroscopy
• Spin Dynamics in the Magnetic Chains Arrays of Sr14Cu24O41: a Neutron Inelastic scattering Investigation
• Quasi-two-dimensional hole ordering and dimerized state in the CuO2-chain layers in Sr14Cu24O41
• Magnon-Hole Scattering and Charge Order in $S{r}_{14-x}C{a}_{x}C{u}_{24}{O}_{41}$
• Charge and spin order in one-dimensional electron systems with long-range Coulomb interactions
• DMRG study of the spin gap in a one dimensional Hubbard model: effect of the distant transfer and exchange coupling
• Influence of the incommensurability in $S{r}_{14-x}C{a}_{x}C{u}_{24}{O}_{41}$ family compounds
• Ising magnets with mobile defects
• Ising model with periodic pinning of mobile defects
• Electronic structure of the $S{r}_{0.4}C{a}_{13.6}C{u}_{24}{O}_{41}$ incommensurate compound

Cited by in corpus (4)

• Domain-wall excitons and optical conductivity in one-dimensional Wigner lattices
• Magnetic ground state of coupled edge-sharing CuO_2 spin-chains
• Non-classicality of spin structures in condensed matter: An analysis of Sr${}_{14}$Cu${}_{24}$O${}_{41}$
• Revisiting and modeling the magnetism of hole-doped CuO_2 spin chains in Sr{14-x}Ca_xCu_{24}O_{41}