Coexistence of ferromagnetism and superconductivity: the role of kinetic interactions, kinetic correlations, and external pressure

Details Coexistence of ferromagnetism and superconductivity: the role of kinetic interactions, kinetic correlations, and external pressure Coexistence of ferromagnetism and superconductivity: the role of kinetic interactions, kinetic correlations, and external pressure

2008-06-17

arxiv.org/abs/0806.2774v1

Physica C 469, 1-8 (2009)

Physics

Condensed Matter

Superconductivity

15 pages, 9 figures

Scientific paper

10.1016/j.physc.2008.09.010

We use the Hubbard type model to describe the coexistence between superconductivity (SC) and ferromagnetism (F). Our Hamiltonian contains single-site and two-site interactions. All inter-site interactions will have included the inter-site kinetic correlation: $$, within the Hartree-Fock approximation. To obtain the SC transition temperature $T_{SC}$ and Curie temperature $T_{C}$ we use the Green's functions method. The numerical results show that the singlet SC is eliminated by F, but the triplet SC is either enhanced or depleted by F, depending on the carrier concentration and direction of a superconducting spin pair with respect to magnetization. The kinetic correlation is capable of creating superconductivity. We find that the ferromagnetism created by change of the bandwidth can coexist with singlet superconductivity. In the case of triplet superconductivity the ferromagnetism creates different critical SC temperatures for the $A_{1}$ and $A_{2}$ phase (the pair's spin parallel and antiparallel to magnetization, respectively).

Affiliated with

Also associated with

No associations

Rating

Coexistence of ferromagnetism and superconductivity: the role of kinetic interactions, kinetic correlations, and external pressure 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 Coexistence of ferromagnetism and superconductivity: the role of kinetic interactions, kinetic correlations, and external pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coexistence of ferromagnetism and superconductivity: the role of kinetic interactions, kinetic correlations, and external pressure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-408545