Volume 83, Number 3, August 2008
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||30 June 2008|
Dimerization transition of alkali-TCNQ salts: Charge degrees of freedom near the CDW boundary
Solid State and Structural Chemistry Unit, Indian Institute of Science - Bangalore 560012, India
2 Department of Chemistry, Princeton University - Princeton, NJ 08544, USA
Corresponding author: email@example.com
Accepted: 16 June 2008
Stacks of TCNQ- radical ions in 1 : 1 alkali salts are shown to be near the charge-density-wave (CDW) boundary, where charge degrees of freedom induce strong dimerization . Charge-transfer absorption and are obtained for a one-dimensional (1D) Hubbard model with long-range Coulomb interactions V that ranges from spin-Peierls at to the CDW boundary at Vc and beyond. Cation dimerization lifts the degeneracy of Peierls systems and confers 3D contributions to the dimerization transition of alkali-TCNQ salts.
PACS: 71.10.Fd – Lattice fermion models (Hubbard model, etc.) / 71.30.+h – Metal-insulator transitions and other electronic transitions / 71.45.Lr – Charge-density-wave systems
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.