Exact ground and excited states of a t-J ladder doped with two holes

Details Exact ground and excited states of a t-J ladder doped with two holes Exact ground and excited states of a t-J ladder doped with two holes

1998-12-09

arxiv.org/abs/cond-mat/9812140v2

Physics

Condensed Matter

Strongly Correlated Electrons

LaTeX, 15 pages, 5 PS figures, accepted in Journal of Physics: Condensed Matter

Scientific paper

10.1088/0953-8984/11/33/311

A two chain ladder model is considered described by the strong coupling $t-t^\prime-J-J^\prime$ Hamiltonian. For the case of two holes moving in a background of antiferromagnetically interacting spins, exact, analytical results are derived for the ground state energy and low-lying excitation spectrum. The ground state is a bound state of two holes with total spin S=0. The charge excitation is gapless and the spin excitation has a gap. The corresponding wavefunctions are also exactly determined. The bound hole pair is found to have symmetry of the d-wave type. In the limit of strong rung coupling, the model maps onto an effective hard core boson model which exhibits dominant superconducting pairing correlations.

Affiliated with

Also associated with

No associations

Rating

Exact ground and excited states of a t-J ladder doped with two holes 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 Exact ground and excited states of a t-J ladder doped with two holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exact ground and excited states of a t-J ladder doped with two holes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-310157