Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2009-12-29
Phys. Rev. B 81, 144407 (2010)
Physics
Condensed Matter
Statistical Mechanics
10 pages, 2 eps figures included, final version as published.
Scientific paper
10.1103/PhysRevB.81.144407
We investigate the phase transition in a three-dimensional classical Heisenberg magnet with planar defects, i.e., disorder perfectly correlated in two dimensions. By applying a strong-disorder renormalization group, we show that the critical point has exotic infinite-randomness character. It is accompanied by strong power-law Griffiths singularities. We compute various thermodynamic observables paying particular attention to finite-size effects relevant for an experimental verification of our theory. We also study the critical dynamics within a Langevin equation approach and find it extremely slow. At the critical point, the autocorrelation function decays only logarithmically with time while it follows a nonuniversal power-law in the Griffiths phase.
Mohan Priyanka
Narayanan Rajesh
Vojta Thomas
No associations
LandOfFree
Infinite randomness and quantum Griffiths effects in a classical system: the randomly layered Heisenberg magnet 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 Infinite randomness and quantum Griffiths effects in a classical system: the randomly layered Heisenberg magnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infinite randomness and quantum Griffiths effects in a classical system: the randomly layered Heisenberg magnet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-62598