Pinned incommensurate structure of cesium intercalated graphite

Abstract

An inhibition of long-range three-dimensional order at low temperatures in nearly commensurate Cs-graphite (stages 2 and 3) is reported. We interpret this as the result of a competition between local in-plane ordering at domain walls and interlayer interactions which in stage 3 favor a simple hcp intercalant stacking. Computer modeling shows evidence for two stable rotated domain-wall configurations.