Phase Separation Models for Cuprate Stripe Arrays

Details Phase Separation Models for Cuprate Stripe Arrays Phase Separation Models for Cuprate Stripe Arrays

2001-02-23

arxiv.org/abs/cond-mat/0102438v2

Physics

Condensed Matter

Superconductivity

significant revisions: includes island phase, 16 eps figures, revtex

Scientific paper

10.1103/PhysRevB.65.064520

An electronic phase separation model provides a natural explanation for a large variety of experimental results in the cuprates, including evidence for both stripes and larger domains, and a termination of the phase separation in the slightly overdoped regime, when the average hole density equals that on the charged stripes. Several models are presented for charged stripes, showing how density waves, superconductivity, and strong correlations compete with quantum size effects (QSEs) in narrow stripes. The energy bands associated with the charged stripes develop in the middle of the Mott gap, and the splitting of these bands can be understood by considering the QSE on a single ladder.

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