A Pseudogap in the Single-Particle Density of States of a Tomonaga-Luttinger Liquid

Details A Pseudogap in the Single-Particle Density of States of a Tomonaga-Luttinger Liquid A Pseudogap in the Single-Particle Density of States of a Tomonaga-Luttinger Liquid

2000-04-02

arxiv.org/abs/cond-mat/0004007v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, including 2 figures

Scientific paper

We study a single-particle density of states (DOS) in a model of Tomonaga-Luttinger liquid with small (large) values of the Luttinger parameter $K_\rc < 0.17$, ($K_\rc > 5.82$), in the charge sector. We explain that such values of $K_\rc$ may be achieved by electron-phonon interactions without generating the spin gap. We suggest that electron-phonon interactions can be partially incorporated into the Tomonaga-Luttinger liquid scheme by introducing frequency dependent $K_\rc(\omega)$. We demonstrate that when the low-frequency asymptotic value $K_\rc(0) < 0.17$ or $K_\rc(0) > 5.82$, the single-particle DOS has a pseudogap behavior in frequency where $\rho(\omega)/\omega$ vanishes at small frequencies. The DOS exhibits a peak the position of which scales as $[K(0) + K^{-1}(0)]\omega_0/2$ where $\omega_0$ is the characteristic phonon frequency.

Affiliated with

Also associated with

No associations

Rating

A Pseudogap in the Single-Particle Density of States of a Tomonaga-Luttinger Liquid 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 A Pseudogap in the Single-Particle Density of States of a Tomonaga-Luttinger Liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Pseudogap in the Single-Particle Density of States of a Tomonaga-Luttinger Liquid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-579854