Topological superconductors are novel classes of quantum condensed phases,
characterized by topologically nontrivial structures of Cooper pairing states. On the surfaces …

'Conventional'superconductivity, as used in this review, refers to electron–phonon-coupled
superconducting electron pairs described by BCS theory. Unconventional superconductivity …

Intermetallic compounds containing f-electron elements display a wealth of superconducting
phases, which are prime candidates for unconventional pairing with complex order …

High-temperature superconductivity and a wide variety of exotic superconducting states
discovered in FeSe-based materials have been at the frontier of research on condensed …

Weyl points in three spatial dimensions are characterized by a Z-valued charge—the Chern
number—which makes them stable against a wide range of perturbations. A set of Weyl …

This Colloquium reviews the 25 year quest to understand the continuous (second-order),
mean-field-like phase transition occurring at 17.5 K in URu 2 Si 2. About ten years ago, the …

It is commonly believed that, in the absence of disorder or an external magnetic field, there
are three possible types of superconducting excitation gaps: The gap is nodeless, it has …

A second-order phase transition is characterized by spontaneous symmetry breaking. The
nature of the broken symmetry in the so-called “hidden-order” phase transition in the heavy …

Topological superconductors have become a subject of intense research due to their
potential use for technical applications in device fabrication and quantum information …

We present resistivity and thermal-conductivity measurements of superconducting FeSe in
intense magnetic fields up to 35 T applied parallel to the ab plane. At low temperatures, the …