Phase transitions governed by spontaneous time reversal symmetry breaking (TRSB) have
long been sought in many quantum systems, including materials with anomalous Hall effect …

Magnetism is widely considered to be a key ingredient of unconventional superconductivity.
In contrast to cuprate high-temperature superconductors, antiferromagnetism in most Fe …

Recent experiments in optimally hole-doped iron arsenides have revealed a novel
magnetically ordered ground state that preserves tetragonal symmetry, consistent with either …

In most magnetically-ordered iron pnictides, the magnetic moments lie in the FeAs planes,
parallel to the modulation direction of the spin stripes. However, recent experiments in hole …

We perform a microscopic theoretical study of the generic properties of competing magnetic
phases in iron pnictides. As a function of electron filling and temperature, the magnetic stripe …

We present a detailed investigation of the topological phases and Majorana fermion (MF)
excitations that arise from the bulk interplay between (un) conventional one-and two-band …

In most iron-based superconductors, the transition to the magnetically ordered state is
closely linked to a lowering of structural symmetry from tetragonal (C 4) to orthorhombic (C …

We study the effects of disorder on unconventional superconductors in the presence of
correlations, and explore a novel correlated disorder paradigm dominated by strong …

We report on temperature-dependent pair distribution function measurements of Sr 1-x Na x
Fe 2 As 2, an iron-based superconductor system that contains a magnetic phase with …

The recently discovered C 4 tetragonal magnetic phase in hole-doped members of the iron-
based superconductors provides insights into the origin of unconventional …