Local excitations of a spin glass in a magnetic field

Details Local excitations of a spin glass in a magnetic field Local excitations of a spin glass in a magnetic field

2002-08-06

arxiv.org/abs/cond-mat/0208100v2

Phys. Rev. B 68, 012404 (2003)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 5 figures, clarifications and slightly modified figures

Scientific paper

10.1103/PhysRevB.68.012404

We study the minimum energy clusters (MEC) above the ground state for the 3-d Edwards-Anderson Ising spin glass in a magnetic field. For fields B below 0.4, we find that the field has almost no effect on the excitations that we can probe, of volume V <= 64. As found previously for B=0, their energies decrease with V, and their magnetization remains very small (even slightly negative). For larger fields, both the MEC energy and magnetization grow with V, as expected in a paramagnetic phase. However, all results appear to scale as BV (instead of the B sqrt(V) expected from droplet arguments), suggesting that the spin glass phase is destroyed by any small field. Finally, the geometry of the MEC is completely insensitive to the field, giving further credence that they are lattice animals, in the presence or the absence of a field.

Affiliated with

Also associated with

No associations

Rating

Local excitations of a spin glass in a magnetic field 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 Local excitations of a spin glass in a magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Local excitations of a spin glass in a magnetic field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-427530