Effects of the Van Hove singularities on magnetism and superconductivity in the t-t' Hubbard model: a parquet approach

Details Effects of the Van Hove singularities on magnetism and superconductivity in the t-t' Hubbard model: a parquet approach Effects of the Van Hove singularities on magnetism and superconductivity in the t-t' Hubbard model: a parquet approach

2001-02-21

arxiv.org/abs/cond-mat/0102381v1

Phys. Rev. B64, 165107 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

23 pages, RevTeX, 9 figures; additional information can be found at http://www.imp.uran.ru/KTM_LAB/Katanin; the paper will be

Scientific paper

10.1103/PhysRevB.64.165107

The t-t' Hubbard model for the Fermi level near the Van Hove singularity is considered within the renormalization group and parquet approaches. The interplay of ferromagnetic, antiferromagnetic, and superconducting channels is investigated, and the phase diagram of the model is constructed. In comparison with previous approaches, the account of ferromagnetic fluctuations suppresses superconducting pairing and, vice versa, the influence of the Cooper channel decreases the Curie temperature, so that the Stoner criterion is inapplicable even qualitatively.

Affiliated with

Also associated with

No associations

Rating

Effects of the Van Hove singularities on magnetism and superconductivity in the t-t' Hubbard model: a parquet approach 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 Effects of the Van Hove singularities on magnetism and superconductivity in the t-t' Hubbard model: a parquet approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of the Van Hove singularities on magnetism and superconductivity in the t-t' Hubbard model: a parquet approach will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-520041