Large-$U$ limit of a Hubbard model in a magnetic field: chiral spin interactions and paramagnetism

Details Large-$U$ limit of a Hubbard model in a magnetic field: chiral spin interactions and paramagnetism Large-$U$ limit of a Hubbard model in a magnetic field: chiral spin interactions and paramagnetism

1994-12-05

arxiv.org/abs/cond-mat/9412017v1

Phys. Rev. B 51 (1995) 1922-1925

Physics

Condensed Matter

12 pages, plain TeX, one figure available on request, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.51.1922

We consider the large-$U$ limit of the one-band Hubbard model at half-filling on a non-bipartite two-dimensional lattice. An external magnetic field can induce a three-spin chiral interaction at order $1 / U^2 ~$. We discuss situations in which, at low temperatures, the chiral term may have a larger effect than the Pauli coupling of electron spins to a magnetic field. We present a model which explicitly demonstrates this. The ground state is a singlet with a gap; hence the spin susceptibility is zero while the chiral susceptibility is finite and paramagnetic.

Affiliated with

Also associated with

No associations

Rating

Large-$U$ limit of a Hubbard model in a magnetic field: chiral spin interactions and paramagnetism 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 Large-$U$ limit of a Hubbard model in a magnetic field: chiral spin interactions and paramagnetism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large-$U$ limit of a Hubbard model in a magnetic field: chiral spin interactions and paramagnetism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-676301