Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-01-20
Phys. Rev. B 58, 1261 (1998).
Physics
Condensed Matter
Strongly Correlated Electrons
12 pages, 7 figures, RevTeX; minor corrections to text and references; To be published in Phys. Rev. B, 15 July 1998
Scientific paper
10.1103/PhysRevB.58.1261
We have measured the electrodynamic response in the metallic state of three highly anisotropic conductors, (TMTSF)_2 X, where X=PF_6, AsF_6, or ClO_4, and TMTSF is the organic molecule tetramethyltetraselenofulvalene. In all three cases we find dramatic deviations from a simple Drude response. The optical conductivity has two features: a narrow mode at zero frequency, with a small spectral weight, and a mode centered around 200 cm^{-1}, with nearly all of the spectral weight expected for the relevant number of carriers and single particle bandmass. We argue that these features are characteristic of a nearly one-dimensional half- or quarter-filled band with Coulomb correlations, and evaluate the finite energy mode in terms of a one-dimensional Mott insulator. At high frequencies (\hbar\omega > t_\perp, the transfer integral perpendicular to the chains), the frequency dependence of the optical conductivity \sigma_1(\omega) is in agreement with calculations based on an interacting Tomonaga-Luttinger liquid, and is different from what is expected for an uncorrelated one-dimensional semiconductor. The zero frequency mode shows deviations from a simple Drude response, and can be adequately described with a frequency dependent mass and relaxation rate.
Degiorgi Leonardo
Dressel Martin
Giamarchi Thierry
Gruner George
Schwartz Andrew
No associations
LandOfFree
On-chain electrodynamics of metallic (TMTSF)_2 X salts: Observation of Tomonaga-Luttinger liquid response does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On-chain electrodynamics of metallic (TMTSF)_2 X salts: Observation of Tomonaga-Luttinger liquid response, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-chain electrodynamics of metallic (TMTSF)_2 X salts: Observation of Tomonaga-Luttinger liquid response will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-216927