ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Dimerization transition of alkali-TCNQ salts: Charge degrees of freedom near the CDW boundary

Kumar, Manoranjan and Ramasesha, S and Pascal, RA and Soos, ZG (2008) Dimerization transition of alkali-TCNQ salts: Charge degrees of freedom near the CDW boundary. In: Europhysics Letters, 83 (3). pp. 37001-1.

[img] PDF
epl_83_3_37001.pdf - Published Version
Restricted to Registered users only

Download (197Kb) | Request a copy
Official URL: http://www.iop.org/EJ/article/0295-5075/83/3/37001...

Abstract

Stacks of TCNQ − radical ions in 1 : 1 alkali salts are shown to be near the chargedensity- wave (CDW) boundary, where charge degrees of freedom induce strong dimerization δ.Charge-transfer absorption and δ(V ) are obtained for a one-dimensional (1D) Hubbard model with long-range Coulomb interactions V that ranges from spin-Peierls at V =0 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.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to EPLA.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 20 Mar 2009 06:28
Last Modified: 19 Sep 2010 04:50
URI: http://eprints.iisc.ernet.in/id/eprint/15987

Actions (login required)

View Item View Item