In traditional metals, the temperature (T) dependence of electrical resistivity vanishes at low
or high T, albeit for different reasons. Here, we review a class of materials, known as …

Cuprates exhibit exceptionally strong superconductivity. To understand why, it is essential to
elucidate the nature of the electronic interactions that cause pairing. Superconductivity …

Strange metals possess highly unconventional electrical properties, such as a linear-in-
temperature resistivity,,,,–, an inverse Hall angle that varies as temperature squared,–and a …

The anomalous metallic state in the high-temperature superconducting cuprates is masked
by superconductivity near a quantum critical point. Applying high magnetic fields to suppress …

While the recent advances in topology have led to a classification scheme for electronic
bands described by the standard theory of metals, a similar scheme has not emerged for …

Over the past two decades, advances in computational algorithms have revealed a curious
property of the two-dimensional Hubbard model (and related theories) with hole doping: the …

The nematic electronic state and its associated critical fluctuations have emerged as a
potential candidate for the superconducting pairing in various unconventional …

The notion of a band gap is ubiquitous in the characterization of matter. Particularly
interesting are pseudo-gaps, which are enigmatic regions of very low density of states that …

The discovery of high-temperature superconductivity in cuprates ranks among the major
scientific milestones of the past half century, yet pivotal questions regarding the complex …

A normal metal exhibits a valence plasmon, which is a sound wave in its conduction electron
density. The mysterious strange metal is characterized by non-Boltzmann transport and …