This article is a review of recent developments in the phenomenological description of
unconventional superconductivity. Starting with the BCS theory of superconductivity with …

Superconductivity and magnetism are adversarial states of matter. The presence of
spontaneous magnetic fields inside the superconducting state is, therefore, an intriguing …

Although the properties of most superconducting materials are well described by the theory
of Bardeen, Cooper and Schrieffer (BCS), considerable effort has been devoted to the …

Superconducting (SC) state has spin and orbital degrees of freedom, and spin-triplet
superconductivity shows multiple SC phases because of the presence of these degrees of …

The authors present a review of recent muon spin rotation (μSR) studies of the vortex state in
type-II superconductors. There are significant gaps in our understanding of this unusual …

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 …

Muon spin relaxation experiments on the noncentrosymmetric intermetallic superconductor
LaNiC 2 are reported. We find that the onset of superconductivity coincides with the …

We report on muon-spin relaxation measurements of the 4 f 2-based heavy-fermion
superconductor filled-skutterudite Pr⁡ O s 4 S b 12. The results reveal the spontaneous …

We report muon spin rotation-relaxation measurements of the heavy fermion superconductor
UPt 3. The broadening of the transverse field muon precession signal sets in approximately …

We present a comprehensive theory for Bogoliubov Fermi surfaces in inversion-symmetric
superconductors which break time-reversal symmetry. A requirement for such a gap …