Competing Quantum Orderings in Cuprate Superconductors: A Minimal Model
Ivar Martin, Gerardo Ortiz, A. V. Balatsky, A. R. Bishop
Abstract
We present a minimal model for cuprate superconductors. At the unrestricted mean-field level, the model produces homogeneous superconductivity at large doping, striped superconductivity in the underdoped regime and various antiferromagnetic phases at low doping and for high temperatures. On the underdoped side, the superconductor is intrinsically inhomogeneous and global phase coherence is achieved through Josephson-like coupling of the superconducting stripes. The model is applied to calculate experimentally measurable ARPES spectra.
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