Pairing symmetry in the cuprate superconductors is an important and controversial topic.
The recent development of phase-sensitive tests, combined with the refinement of several …

Although the vast majority of high-T c cuprate superconductors are hole-doped, a small
family of electron-doped compounds exists. Underinvestigated until recently, there has been …

Since the first days of high-T c superconductivity, the materials science and the physics of
grain boundaries in superconducting compounds have developed into fascinating fields of …

The advent of high-T c superconductors gave great impetus to the development of thin-film
superconducting quantum interference devices (SQUIDs) for operation at temperatures up to …

The formation of bound states at surfaces of materials with an energy gap in the bulk
electron spectrum is a well known physical phenomenon. At superconductor surfaces …

This review is an up-to-date snapshot of the current situation in studies of materials with
competing electron spectrum instabilities, namely Cooper pairing, on the one hand, and …

We present point contact spectroscopy (PCS) data for junctions between a normal metal and
the electron-doped cuprate superconductor Pr 2− x Ce x CuO 4 (PCCO). For the …

An unusual technique utilizing the two-dimensional junction configuration is introduced to
study the pairing symmetry of a YBa 2 Cu 3 O 7− y cuprate superconductor. The zero bias …

We report microwave cavity perturbation measurements of the temperature dependence of
the penetration depth, λ (T), and conductivity, σ (T) of Pr 2− x Ce x CuO 4− δ (PCCO) …

We review the intermediate coupling model for treating electronic correlations in the
cuprates. Spectral signatures of the intermediate coupling scenario are identified and used …