Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons

Details Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons

2004-09-22

arxiv.org/abs/cond-mat/0409573v2

Phys. Rev. B 71, 184309 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 7 figures; final version, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.71.184309

The one-dimensional Holstein-Hubbard model with two electrons of opposite spin is studied using an extension of a recently developed quantum Monte Carlo method, and a very simple yet rewarding variational approach, both based on a canonically transformed Hamiltonian. The quantum Monte Carlo method yields very accurate results in the regime of small but finite phonon frequencies, characteristic of many strongly correlated materials such as, e.g., the cuprates and the manganites. The influence of electron-electron repulsion, phonon frequency and temperature on the bipolaron state is investigated. Thermal dissociation of the intersite bipolaron is observed at high temperatures, and its relation to an existing theory of the manganites is discussed.

Affiliated with

Also associated with

No associations

Rating

Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons 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 Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-442351