Phase fluctuations of s-wave superconductors on a lattice

Details Phase fluctuations of s-wave superconductors on a lattice Phase fluctuations of s-wave superconductors on a lattice

2003-09-10

arxiv.org/abs/cond-mat/0309261v1

Physics

Condensed Matter

Superconductivity

3 figures

Scientific paper

10.1023/B:JOLT.0000024550.59637.

Based on an attractive $U$ Hubbard model on a lattice with up to second neighbor hopping we derive an effective Hamiltonian for phase fluctuations. The superconducting gap is assumed to have s-wave symmetry. The effective Hamiltonian we finally arrive at is of the extended XY type. While it correctly reduces to a simple XY in the continuum limit, in the general case, it contains higher neighbor interaction in spin space. An important feature of our Hamiltonian is that it gives a much larger fluctuation region between the Berezinskii-Kosterlitz-Thouless transition temperature identified with $T_{c}$ for superconducting and the mean field transition temperature identified with the pseudogap temperature.

Affiliated with

Also associated with

No associations

Rating

Phase fluctuations of s-wave superconductors on a lattice 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 Phase fluctuations of s-wave superconductors on a lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase fluctuations of s-wave superconductors on a lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-348761