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Anomalously elastic intermediate phase in randomly layered superfluids, superconductors, and planar magnets.
MedLine Citation:
PMID:  20868107     Owner:  NLM     Status:  PubMed-not-MEDLINE    
We show that layered quenched randomness in planar magnets leads to an unusual intermediate phase between the conventional ferromagnetic low-temperature and paramagnetic high-temperature phases. In this intermediate phase, which is part of the Griffiths region, the spin-wave stiffness perpendicular to the random layers displays anomalous scaling behavior, with a continuously variable anomalous exponent, while the magnetization and the stiffness parallel to the layers both remain finite. Analogous results hold for superfluids and superconductors. We study the two phase transitions into the anomalous elastic phase, and we discuss the universality of these results, and implications of finite sample size as well as possible experiments.
Priyanka Mohan; Paul M Goldbart; Rajesh Narayanan; John Toner; Thomas Vojta
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Publication Detail:
Type:  Journal Article     Date:  2010-08-20
Journal Detail:
Title:  Physical review letters     Volume:  105     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-09-27     Completed Date:  2011-01-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  085301     Citation Subset:  -    
Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India.
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