Tricritical and critical end-point phenomena under random bonds

Journal Article · Sat Jun 01 00:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.4380· OSTI ID:285993

Falicov, A; Berker, A N ^[1]

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1. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

The effect of bond randomness on tricritical and critical end-point phenomena is studied by renormalization-group theory. In three dimensions, the pure-system tricritical point is replaced by a line segment of second-order transitions dominated by randomness and bounded by a multicritical point and a random-bond tricritical point, which reaches zero temperature at threshold randomness. This topology indicates a violation of the empirical universality principle. The random-bond tricritical point renormalizes onto the fixed distribution of random-field Ising criticality. {copyright} {ital 1996 The American Physical Society.}

• DOE Contract Number: FG02-92ER45473
• OSTI ID: 285993
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CRITICAL POINTS
PHASE TRANSFORMATIONS
RANDOMNESS
RECURSION RELATIONS
RENORMALIZATION
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TOPOLOGY