Doped SrTiO 3, one of the most dilute bulk systems to display superconductivity, is perhaps
the first example of an unconventional superconductor, as it does not fit into the standard …

We review the class of materials known as polar metals, in which polarity and metallicity
coexist in the same phase. While the notion of polar metals was first invoked more than 50 …

The properties of quantum materials are commonly tuned using experimental variables such
as pressure, magnetic field and doping. Here we explore a different approach using …

Identifying the microscopic mechanism for superconductivity in magic-angle twisted bilayer
graphene (MATBG) is an outstanding open problem. While MATBG exhibits a rich phase …

The mechanisms by which itinerant carriers compete with polar crystal distortions are a key
unresolved issue for polar superconductors, which offer new routes to unconventional …

We use first-principles methods to study doped strong ferroelectrics (taking BaTiO3 as a
prototype). Here, we find a strong coupling between itinerant electrons and soft polar …

A superconductor emerges as a condensate of electron pairs, which bind despite their
strong Coulomb repulsion. Eliashberg's theory elucidates the mechanisms enabling them to …

Motivated by the physics of spin-orbital liquids, we study a model of interacting Dirac
fermions on a bilayer honeycomb lattice at half filling, featuring an explicit global SO (3)× U …

Ferroelectricity, band topology, and superconductivity are respectively local, global, and
macroscopic properties of quantum materials, and understanding their mutual couplings …

Motivated by the experimental observation that superconductivity in bulk doped SrTiO 3 is
enhanced as a putative ferroelectric quantum critical point (FE-QCP) is approached, we …