ITA
ENG

Dislocation geometry in the TGB(A) phase: Linear theory - art. no. 061702

Authors

Bluestein, I Kamien, RD Lubensky, TC

Citation

I. Bluestein et al., Dislocation geometry in the TGB(A) phase: Linear theory - art. no. 061702, PHYS REV E, 6306(6), 2001, pp. 1702

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW E

ISSN journal

1063651X → ACNP

Volume

6306

Issue

Year of publication

2001

Part

Database

ISI

SICI code

1063-651X(200106)6306:6<1702:DGITTP>2.0.ZU;2-G

Abstract

We demonstrate that an arbitrary system of screw dislocations in a smectic- A liquid crystal may be consistently treated within harmonic elasticity the ory, provided that the angles between dislocations are sufficiently small. Using this theory, we calculate the ground-state configuration of the TGB(A ) phase. We obtain an estimate of the twist-grain-boundary spacing and scre w dislocation spacing in a boundary in terms of the macroscopic parameters, in reasonable agreement with experimental results.