Competing Ground States of a Peierls-Hubbard Nanotube

Abstract

Motivated by iodo platinum complexes assembled within a quadratic-prism lattice, [Pt(C${}_2$H${}_8$N${}_2$)(C${}_{10}$H${}_8$N${}_2$)I]${}_4$(NO${}_3$)${}_8$, we investigate the ground-state properties of a Peierls-Hubbard four-legged tube. Making a group-theoretical analysis, we systematically reveal a variety of valence arrangements, including half-metallic charge-density-wave states. Quantum and thermal phase competition is numerically demonstrated with particular emphasis on doping-induced successive insulator-to-metal transitions with conductivity increasing stepwise.

6 pages, 4 figures. to be published in Europhys. Lett. 87 (2009) 17006

References in corpus (2)

• Competing ground states of metal-halide ladders
• Optical characterization of ground states of polyacene

Cited by in corpus (1)

• Ground-state properties of a Peierls-Hubbard triangular prism