In normal metals, macroscopic properties are understood using the concept of
quasiparticles. In the cuprate high-temperature superconductors, the metallic state above …

The existence of electronic symmetry breaking in the underdoped cuprates and its
disappearance with increased hole density p are now widely reported. However, the relation …

The identity of the fundamental broken symmetry (if any) in the underdoped cuprates is
unresolved. However, evidence has been accumulating that this state may be an …

In strongly correlated materials, superconductivity is often found near a magnetic quantum
critical point (QCP) where a magnetic phase vanishes and its fluctuations proliferate …

In many quantum materials, strong electron correlations lead to the emergence of new states
of matter. In particular, the study in the last decades of the complex phase diagram of high …

An anapole state that breaks inversion and time-reversal symmetries while preserving
translation symmetry of an underlying lattice has aroused great interest as a new quantum …

The pseudo-gap phenomenon in copper oxide superconductors is central to any description
of these materials as it prefigures the superconducting state itself. A magnetic intra-unit-cell …

Within the complex phase diagram of the hole-doped cuprates, seizing the nature of the
mysterious pseudogap phase is essential for unraveling the microscopic origin of high …

As in YBa 2 Cu 3 O 6+ x and HgBa 2 CuO 8+ δ, the pseudogap state in Bi 2 Sr 2 CaCu 2 O
8+ δ is characterized by the existence of an intra-unit-cell magnetic order revealed by …

The simple structure of HgBa 2 CuO 4+ δ (Hg1201) is ideal among cuprates for study of the
pseudogap phase as a broken symmetry state. We have performed O 17 nuclear magnetic …