The past decades have witnessed an explosion of interest in topological materials, and a lot
of mathematical concepts have been introduced in condensed matter physics. Among them …

Topological materials have become the focus of intense research in recent years, since they
exhibit fundamentally new physical phenomena with potential applications for novel devices …

Exceptional points are universal level degeneracies induced by non-Hermiticity. Whereas
past decades witnessed their new physics, the unified understanding has yet to be obtained …

This review elaborates pedagogically on the fundamental concept, basic theory, expected
properties, and materials realizations of topological superconductors. The relation between …

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

While the topological classification of insulators, semimetals, and superconductors in terms
of nonspatial symmetries is well understood, less is known about topological states …

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 …

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 …

Cu x Bi 2 Se 3 was recently proposed as a promising candidate for time-reversal-invariant
topological superconductors. In this work, we argue that the unusual anisotropy of the Knight …

We theoretically study superconductivity in UTe 2, which is a recently discovered strong
candidate for an odd-parity spin-triplet superconductor. Theoretical studies for this …