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 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 …

Recent experiments have proven that the quasiparticles in graphene obey a Dirac equation.
Here we show that microwaves are an excellent probe of their unusual dynamics. When the …

In materials with strong local Coulomb interactions, simple defects such as atomic
substitutions strongly affect both macroscopic and local properties of the system. A …

We report muon spin rotation (μ SR) experiments together with first-principles calculations
on microscopic properties of superconductivity in the kagome superconductor LaRu 3 Si 2 …

We use the quasiclassical theory of superconductivity to calculate the electronic contribution
to the thermal conductivity. The theory is formulated for low temperatures when heat …

Due to the node structure of the gap in a d-wave superconductor, the presence of impurities
generates a finite density of quasiparticle excitations at zero temperature. Since these …

We present here the microwave surface impedance of a high-purity crystal of YBa 2 Cu 3 O
6.99 measured at five frequencies between 1 and 75 GHz. This data set reveals the main …