Absence of Two-Dimensional Bragg Glasses

Chen Zeng; P. L. Leath; Daniel S. Fisher

doi:10.1103/PhysRevLett.82.1935

Absence of Two-Dimensional Bragg Glasses

Chen Zeng, P. L. Leath, and Daniel S. Fisher

Phys. Rev. Lett. 82, 1935 – Published 1 March 1999

Abstract

The stability to dislocations of the elastic phase, or “Bragg glass,” of a randomly pinned elastic medium in two dimensions is studied using the minimum-cost-flow algorithm for a disordered fully packed loop model. The elastic phase is found to be unstable to dislocations due to the quenched disorder. The energetics of dislocations are discussed within the framework of renormalization group predictions as well as in terms of a domain wall picture.

Received 20 July 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.1935

Authors & Affiliations

Chen Zeng¹, P. L. Leath¹, and Daniel S. Fisher²

¹Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854
²Department of Physics, Harvard University, Cambridge, Massachusetts 02138