X-ray techniques have been used for more than a century to study the atomic and electronic
structure in practically any type of material. The advent of correlated electron systems, in …

Besides superconductivity, copper-oxide high-temperature superconductors are susceptible
to other types of ordering. We used scanning tunneling microscopy and resonant elastic x …

The study of correlated electronic systems from high-Tc cuprates to heavy-fermion systems
continues to motivate the development of experimental tools to probe electronic phenomena …

We show that a small number of intentionally introduced defects can be used as a
spectroscopic tool to amplify quasiparticle interference in 2 H-NbSe 2 that we measure by …

We analyze the interplay between ad-wave uniform superconducting and a pair-density-
wave (PDW) order parameter in the neighborhood of a vortex. We develop a …

Charge order in cuprate superconductors is a possible source of anomalous electronic
properties in the underdoped regime. Intraunit cell charge ordering tendencies point to …

The central issue in the physics of cuprate superconductivity is the mutual relationship
among superconductivity, pseudogap and broken-spatial-symmetry states. A magnetic field …

Since the discovery of stripe order in La 1.6− x Nd 0.4 Sr x CuO 4 superconductors in 1995,
charge ordering in cuprate superconductors has been intensively studied by various …

The pair density wave (PDW) superconducting state has been proposed to explain the layer-
decoupling effect observed in the La 2− x Ba x CuO 4 compound at x= 1/8 [E. Berg, E …

In contacts normal metal–superconductor Bi 1.6 Pb 0.4 Sr 1.8 Ca 2.2 Cu 3 O 10 (Bi2223),
the energy gap Δ (T) of the superconductor and the excess current I exc (T) were measured …