Studies of the electromagnetic response of various classes of correlated electron materials
including transition-metal oxides, organic and molecular conductors, intermetallic …

Recent studies of the electromagnetic response of high-T c superconductors using terahertz,
infrared, and optical spectroscopies are reviewed. In combination these experimental …

Underdoped high-Tc superconductors are frequently characterised by a temperature, T*,
below which the normal-state pseudogap opens. Two different “phase diagrams” based on …

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 …

This review deals with the properties of superconductors with competing electron spectrum
instabilities, namely, charge-density waves (CDWs) and spin-density waves (SDWs). The …

We show that a multilayer analysis of the infrared c-axis response of R Ba 2 Cu 3 O 7-δ (R=
Y, Gd, Eu) provides important new information about the anomalous normal-state properties …

Optical conductivity spectra of conducting oxides, cuprates, including high-Tc
superconductors, nickelates, manganites, doped titanates, barium–lead–bismuth oxides …

The do** dependence of the ratio of the superconducting condensate density to the
effective mass, nso/m ab*, was studied in detail by muon-spin rotation for Y 0.8 Ca 0.2 Ba 2 …

We consider the scenario where a four-lattice constant, rotationally symmetric charge
density wave (CDW) is present in the underdoped cuprates. We prove a theorem that puts …

We describe the setup of an ellipsometer for the far-to mid-infrared (FIR-MIR) spectral range
that is used in combination with a Fourier-transform infrared (FTIR) spectrometer and a …