Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-06-04
Phys. Rev. B. 81, 075121 (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
Scientific paper
We propose a mechanism of superconductivity from purely repulsive interactions in the strong coupling regime, where the BCS (Bardeen-Cooper-Schrieffer) mechanism such as the spin-fluctuation approach is difficult to apply. Based on the SU(2) slave-rotor representation of the Hubbard model, we find that the single energy scale for the amplitude formation of Cooper pairs and their phase coherence is separated into two energy scales, allowing the so called pseudogap state where such Cooper pairs are coherent locally but not globally, interpreted as realization of the density-phase uncertainty principle. This superconducting state shows the temperature-linear decreasing ratio of superfluid weight, resulting from strong phase fluctuations.
Kim Ki-Seok
Kim Mun Dae
No associations
LandOfFree
Superconductivity from purely repulsive interactions in the strong coupling approach : Application of the SU(2) slave-rotor theory to the Hubbard model 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 Superconductivity from purely repulsive interactions in the strong coupling approach : Application of the SU(2) slave-rotor theory to the Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconductivity from purely repulsive interactions in the strong coupling approach : Application of the SU(2) slave-rotor theory to the Hubbard model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-494411