Volume 87, Number 1, July 2009
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||23 July 2009|
Competing ground states of a Peierls-Hubbard nanotube
Department of Physics, Hokkaido University - Sapporo 060-0810, Japan
Corresponding author: email@example.com
Accepted: 25 June 2009
Motivated by iodo platinum complexes assembled within a quadratic-prism lattice, Pt(C2H8N2)(C10H8N2)I] 4(NO3)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.
PACS: 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems / 71.45.Lr – Charge-density-wave systems / 02.20.-a – Group theory
© EPLA, 2009
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