One of the leading challenges of condensed matter physics in the past few decades is an
understanding of the high-temperature copper-oxide superconductors. Although the d-wave …

High-temperature superconductivity in copper oxides occurs when the materials are
chemically tuned to have a carrier concentration intermediate between their metallic state at …

At certain quantum critical points in metals, an entire Fermi surface may disappear. A crucial
question is the nature of the electronic excitations at the critical point. Here we provide …

Central to the understanding of high-temperature superconductivity is the evolution of the
electronic structure as do** alters the density of charge carriers in the CuO2 planes …

We survey recent experimental results including quantum oscillations and complementary
measurements probing the electronic structure of underdoped cuprates, and theoretical …

To understand the origin of superconductivity, it is crucial to ascertain the nature and origin
of the primary carriers available to participate in pairing,,,,,. Recent quantum oscillation …

The origin of pairing in a superconductor resides in the underlying normal state. In the
cuprate high-temperature superconductor YBa2Cu3Oy (YBCO), application of a magnetic …

We report on the direct probing of the Fermi surface in the bulk of the electron-doped
superconductor Nd 2-x Ce x CuO 4 at different do** levels by means of …

An outstanding problem in the field of high-transition-temperature (high-T c)
superconductivity is the identification of the normal state out of which superconductivity …

Transport measurements in the hole‐doped cuprates show a “strange metal” normal state
with an electrical resistance which varies linearly with temperature. This strange metal …