Layered cuprates

On the stability of hole crystals in layered cuprates

Recent STM measurements have revealed the existence of periodic charge modulations at the surface of certain cuprate superconductors. Here we show that the observed patterns are compatible with the formation of a three-dimensional crystal of doped holes, with space correlations extending between different Cu-O layers. This puts severe constraints on the dynamical stability of the crystallised h...

Network patterns and strength of orbital currents in layered cuprates

In the frame of the t-J-G model we derive a microscopical expression for circulating orbital currents in layered cuprates using the anomalous correlation functions. In agreement with muon spin relaxation, nuclear quadrupolar resonance and neutron scattering ~NS! experiments in YBa2Cu3O61x we successfully explain the order of magnitude and the monotonous increase of the internal magnetic fields ...

A Strategy for Higher Temperature Superconductivity in the Layered Cuprates

Recent attempts to raise the critical temperatures of cuprate superconductors are reviewed and discussed in terms of covalent electron transfer between Cu ions of mixed valence. A report of possible superconductivity effects at 250 K is examined from the standpoint of AB02 parent-cell building blocks identified as superconducting by Goodenough and his students at the University of Texas. Based ...

Structure-property relationships in layered tin-titanium cuprates

A review with 6 refs. on the synthesis of layered cuprates with single and double octahedral Sn-O and Ti-O layers. Abstract from SciFinder

c-axis response of single- and double-layered cuprates.