Two new topologically ordered glass phases of smectics confined in anisotropic random media

Details Two new topologically ordered glass phases of smectics confined in anisotropic random media Two new topologically ordered glass phases of smectics confined in anisotropic random media

1999-03-18

arxiv.org/abs/cond-mat/9903290v1

Phys. Rev. Lett, 83, 1363 (1999)

Physics

Condensed Matter

Soft Condensed Matter

4 RevTeX pgs, 2 eps figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.83.1363

We show that smectic liquid crystals confined in_anisotropic_ porous structures such as e.g.,_strained_ aerogel or aerosil exhibit two new glassy phases. The strain both ensures the stability of these phases and determines their nature. One type of strain induces an ``XY Bragg glass'', while the other creates a novel, triaxially anisotropic ``m=1 Bragg glass''. The latter exhibits anomalous elasticity, characterized by exponents that we calculate to high precision. We predict the phase diagram for the system, and numerous other experimental observables.

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