Cx. Wu et al., Linear and nonlinear dielectric constant tensor for monolayer films in terms of orientational order parameters, J CHEM PHYS, 112(23), 2000, pp. 10548-10555
We give a general expression of the dielectric constant tensor in orientati
onal orders in the applied static or low-frequency electric field for the s
emi-two-dimensional monolayer films with C-infinity upsilon symmetry. The d
ielectric anisotropic orientational tensor and orientational polarization t
ensor are derived in orientational order parameters. The nonlinear electro-
optical Pockels effect including the local-field influence is also discusse
d using the orientational orders. A numerical calculation result shows that
the first orientational order parameter S-1 is a destructive order while t
he second orientational orientational order parameter S-2 is a constructive
one to the dielectric constant in the normal direction of monolayer films.
(C) 2000 American Institute of Physics. [S0021-9606(00)70323-0].