Title
Polarity Formation in Molecular Crystals as a Symmetry Breaking Effect.
Abstract
The transition of molecular crystals into a polar state is modeled by a one-dimensional Ising Hamiltonian in multipole expansion and a suitable order parameter. Two symmetry breakings are necessary for the transition: the translational and the spin flip invariance-the former being broken by geometric constraints, the latter by the interaction of the first non-zero multipole with the next order multipole. Two different behaviors of the thermal average of the order parameter as a function of position are found. The free energy per lattice site converges to a finite value in the thermodynamic limit showing the consistency of the model in a macroscopic representation.
Year
DOI
Venue
2016
10.3390/sym8030010
SYMMETRY-BASEL
Keywords
Field
DocType
Ising model,polarity,symmetry breaking,multipole expansion
Multipole expansion,Explicit symmetry breaking,Symmetry breaking,Hamiltonian (quantum mechanics),Lattice (order),Thermodynamic limit,Distributed multipole analysis,Ising model,Condensed matter physics,Physics
Journal
Volume
Issue
ISSN
8
3.0
2073-8994
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Luigi Cannavacciuolo100.34
Jürg Hulliger200.34