TY - JOUR
T1 - Lifshitz-point critical and tricritical behavior in anisotropically stressed perovskites
AU - Aharony, Amnon
AU - Bruce, Alastair D.
PY - 1979
Y1 - 1979
N2 - The antiferrodistortive phase transitions of some perovskite crystals, driven first order by strongly cubic order-parameter fluctuations, are shown to become continuous at finite anisotropic stresses favoring ordering of one order-parameter component. The associated critical and tricritical behavior will be that of one of a spectrum of uniaxial Lifshitz systems, its precise character reflecting the form of the anisotropy in the soft-mode dispersion. Our predictions are in substantial accord with recent experiments on RbCaF3.
AB - The antiferrodistortive phase transitions of some perovskite crystals, driven first order by strongly cubic order-parameter fluctuations, are shown to become continuous at finite anisotropic stresses favoring ordering of one order-parameter component. The associated critical and tricritical behavior will be that of one of a spectrum of uniaxial Lifshitz systems, its precise character reflecting the form of the anisotropy in the soft-mode dispersion. Our predictions are in substantial accord with recent experiments on RbCaF3.
UR - http://www.scopus.com/inward/record.url?scp=4243885070&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.42.462
DO - 10.1103/PhysRevLett.42.462
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:4243885070
SN - 0031-9007
VL - 42
SP - 462
EP - 465
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
ER -