Collective Excitations in the Dilute 2D Electron System

Physical Review Letters American Physical Society (APS) 82:10 (1999) 2163-2166

Authors:

MA Eriksson, A Pinczuk, BS Dennis, SH Simon, LN Pfeiffer, KW West

Comment on ``Evidence for Anisotropic State of Two-Dimensional Electrons in High Landau Levels''

(1999)

A note on density correlations in the half-filled Hubbard model

(1999)

Authors:

Fabian HL Essler, Holger Frahm

Hall effect in the perovskite manganites

Physical Review B American Physical Society (APS) 59:7 (1999) 4746-4751

Authors:

Pinaki Majumdar, Steven H Simon, Anirvan M Sengupta

Collapse of Stiff Polyelectrolytes due to Counterion Fluctuations

ArXiv cond-mat/9901293 (1999)

Authors:

Ramin Golestanian, Mehran Kardar, Tanniemola B Liverpool

Abstract:

The effective elasticity of highly charged stiff polyelectrolytes is studied in the presence of counterions, with and without added salt. The rigid polymer conformations may become unstable due to an effective attraction induced by counterion density fluctuations. Instabilities at the longest, or intermediate length scales may signal collapse to globule, or necklace states, respectively. In the presence of added-salt, a generalized electrostatic persistence length is obtained, which has a nontrivial dependence on the Debye screening length.