THE superconducting state of a metal is characterized by a complex order parameter with an
amplitude and a phase. In the BCS-Eliashberg mean-field theory1, which is a very good …

We introduce a model of the superconducting transition in a bad metal, and show that
quantum and classical phase fluctuations prevent long-range order unless the resistivity ρ …

Publisher Summary This chapter discusses the magnetic properties of lanthanide
compounds.. Specific magnetic and magnetoelastic properties of the crystals are determined …

THE formation of patterned colloidal structures from dispersions of particles has many
potential uses in materials processing1–3. Structures such as chains of particles that form in …

Experiments dealing with electron–phonon coupling at metal surfaces are reviewed. Issues
as diverse as reconstructions at surfaces, Kohn anomalies, Peierls distortions, electron …

We report on an infrared study of carrier dynamics within the CuO 2 planes in heavily
underdoped detwinned single crystals of YBa 2 Cu 3 O y. In an effort to reveal the electronic …

Using the scaling theory of quantum critical phenomena we exploit the occurrence of
universal critical behavior at the insulator-to-superconductor and superconductor-to-normal …

The spectral features of the optical functions of the Drude model are investigated over wide
ranges of parameters—the plasma frequency ω p of the current carriers, their transport …

We investigate inhomogeneous spin structures in the CuO 2 planes of the high-T c cuprates
in the low doping regime. Within the theory of microscopic percolative phase separation a …

When charge is doped into a correlated insulator, it forms an inhomogeneous state which
may be fluctuating, ordered or glassy. The outstandingly successful BCS theory of …