The Hubbard model is the simplest model of interacting fermions on a lattice and is of similar
importance to correlated electron physics as the Ising model is to statistical mechanics or the …

Studies of the electromagnetic response of various classes of correlated electron materials
including transition-metal oxides, organic and molecular conductors, intermetallic …

One of the keys to the high-temperature superconductivity puzzle is the identification of the
energy scales associated with the emergence of a coherent condensate of superconducting …

One of the main challenges in understanding high-T c superconductivity is to disentangle
the rich variety of states of matter that may coexist, cooperate or compete with d-wave …

Pairing of electrons in conventional superconductors occurs at the superconducting
transition temperature T c, creating an energy gap Δ in the electronic density of states (DOS) …

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

The antiferromagnetic ground state of copper oxide Mott insulators is achieved by localizing
an electron at each copper atom in real space (r-space). Removing a small fraction of these …

We used angle-resolved photoemission spectroscopy applied to deeply underdoped
cuprate superconductors Bi2Sr2Ca (1–x) Y x Cu2O8 (Bi2212) to reveal the presence of two …

A term first coined by Mott back in 1968 a “pseudogap” is the depletion of the electronic
density of states at the Fermi level, and pseudogaps have been observed in many systems …

Abstract In a classical Bardeen–Cooper–Schrieffer superconductor, pairing and coherence
of electrons are established simultaneously below the critical transition temperature (T c) …