Exact many-electron ground states on the diamond Hubbard chain

Abstract

Exact ground states of interacting electrons on the diamond Hubbard chain in a magnetic field are constructed which exhibit a wide range of properties such as flat-band ferromagnetism and correlation induced metallic, half-metallic or insulating behavior. The properties of these ground states can be tuned by changing the magnetic flux, local potentials, or electron density.

4 pages, 2 figures

References in corpus (1)

• Exact Insulating and Conducting Ground States of a Periodic Anderson Model in Three Dimensions

Cited by in corpus (4)

• The sawtooth chain: From Heisenberg spins to Hubbard electrons
• Exact low-temperature properties of a class of highly frustrated Hubbard models
• Delocalization effect of the Hubbard repulsion in exact terms and two dimensions
• Correlation and confinement induced itinerant ferromagnetism in chain structures