Dissipation Effects in Percolating Quantum Ising Magnets
Abstract
We study the effects of dissipation on a randomly dilute transverse-field Ising magnet at and close to the percolation threshold. For weak transverse fields, a novel percolation quantum phase transition separates a super-paramagnetic cluster phase from an inhomogeneously ordered ferromagnetic phase. The properties of this transition are dominated by large frozen and slowly fluctuating percolation clusters. Implementing numerically a strong-disorder real space renormalization group technique, we compute the low-energy density of states which is found to be in good agreement with the analytical prediction.
Recommended Citation
J. A. Hoyos and T. Vojta, "Dissipation Effects in Percolating Quantum Ising Magnets," Physica B: Condensed Matter, Elsevier, Apr 2008.
The definitive version is available at https://doi.org/10.1016/j.physb.2007.10.260
Department(s)
Physics
Sponsor(s)
National Science Foundation (U.S.)
Research Corporation
Keywords and Phrases
Disordered Systems; Dissipation; Quantum Phase Transition; Percolation
International Standard Serial Number (ISSN)
0921-4526
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2008 Elsevier, All rights reserved.
Publication Date
01 Apr 2008
