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 …

Electronic charges introduced in copper-oxide (CuO2) planes generate high-transition-
temperature (T c) superconductivity but, under special circumstances, they can also order …

In the quest for superconductors with higher transition temperatures (T c), one emerging
motif is that electronic interactions favorable for superconductivity can be enhanced by …

Topological semimetals represent a new class of quantum materials hosting Dirac/Weyl
fermions. The essential properties of topological fermions can be revealed by quantum …

After the discovery of stripelike order in lanthanum-based copper oxide superconductors,
charge-ordering instabilities were observed in all cuprate families. However, it has proven …

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

Over 20 years since the discovery of high temperature superconductivity in cuprates
(Bednorz and Müller, 1986 [1]), the first convincing observation of quantum oscillations in …

The underlying physics of the magnetic-field induced resistive state in lightly doped high-
temperature cuprate superconductorsremains a mystery. One interpretation is that the …

Weyl fermions are a recently discovered ingredient for correlated states of electronic matter.
A key difficulty has been that real materials also contain non-Weyl quasiparticles, and …

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 …