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 …

This review presents recent developments in the understanding of how impurities influence
the electronic states in the bulk properties of superconductors. The focus is on …

The physics of underdoped copper oxide superconductors, including the pseudogap, spin
and charge ordering and their relation to superconductivity,,, is intensely debated. The …

The high-temperature copper oxide superconductors are of fundamental and enduring
interest. They not only manifest superconducting transition temperatures inconceivable 15 …

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

The Dirac semimetal cadmium arsenide (Cd3As2), a 3D electronic analog of graphene, has
sparked renewed research interests for its novel topological phases and excellent …

The superconducting gap—an energy scale tied to the superconducting phenomena—
opens on the Fermi surface at the superconducting transition temperature (T c) in …

We review the application of ultrafast optical spectroscopy in the study of correlated electron
materials. The emphasis is on all-optical pump–probe and optical pump–far-infrared probe …

Heat transport in the cuprate superconductors YBa 2 Cu 3 O y and La 2− x Sr x CuO 4 was
measured at low temperatures as a function of do**. A residual linear term κ 0/T is …

Overdoped high-temperature cuprate superconductors have often been understood within
the standard BCS framework of superconductivity. However, measurements in a variety of …