Enhancement of the electronic density of states by a polaron mechanism
- 10 October 1982
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 15 (28) , 5763-5772
- https://doi.org/10.1088/0022-3719/15/28/008
Abstract
The spin susceptibility of TTF-TCNQ and other organic metals increases with temperature by about a factor of two between 100 and 300K. This increase is attributed to the narrowing of the band due to strong electron-phonon interaction. The strong electron-phonon interaction leads to phonon dressing of the electrons. A theory is developed to calculate the electronic density of states using Holstein polaron theory. The effect is present even when the phonon frequency is somewhat lower than the electronic hopping integral.Keywords
This publication has 14 references indexed in Scilit:
- Studies of polaron motion: Part II. The “small” polaronPublished by Elsevier ,2004
- Electron correlations and logarithmic singularities in density of states and conductivity of disordered two-dimensional systemsJournal of Physics C: Solid State Physics, 1981
- Anomalous behavior of constant-volume resistivity of TTF-TCNQSynthetic Metals, 1980
- Band transport in quasi-one-dimensional conductors in the phonon-scattering regime and application to tetrathiofulvalene-tetracyanoquinodimethanePhysical Review B, 1980
- Elastic- and inelastic-neutron-scattering study of tetrathiafulvalenium-tetracyanoquinodimethanide (TTF-TCNQ): New resultsPhysical Review B, 1979
- Anharmonic properties of TTF—TCNQSolid State Communications, 1978
- Electronic properties of TTF-TCNQ : a connection between theory and experimentJournal de Physique, 1978
- Role of interchain coupling in linear conductorsPhysical Review B, 1977
- Magnetic susceptibility studies of tetrathiofulvalene-tetracyanoquinodimethan (TTF) (TCNQ) and related organic metalsPhysical Review B, 1974
- Localized states versus band states in a model for small polaronsPhysica, 1974