Strong electronic correlations are often associated with the proximity of a Mott-insulating
state. In recent years however, it has become increasingly clear that the Hund's rule …

The iron-based superconductors that contain FeAs layers as the fundamental building block
in the crystal structures have been rationalized in the past using ideas based on the Fermi …

Diluted magnetic semiconductors have received much attention due to their potential
applications for spintronics devices. A prototypical system (Ga, Mn) As has been widely …

Violation of parity symmetry gives rise to various physical phenomena such as nonlinear
transport and cross-correlated responses. In particular, the nonlinear conductivity has been …

We study an odd-parity magnetic multipole order in Ba 1− x K x Mn 2 As 2 and related
materials. Although BaMn 2 As 2 is a seemingly conventional Mott insulator with G-type …

We report the ferromagnetism with Cure temperature T c at 230 K in a new diluted magnetic
semiconductor (DMS)(Ba 0.7 K 0.3)(Zn 0.85 Mn 0.15) 2 As 2 isostructural to ferropnictide …

In tetragonal SrCo 2 As 2 single crystals, inelastic neutron scattering measurements
demonstrated that strong stripe-type antiferromagnetic (AFM) correlations occur at a …

We derive a quantum-mechanical formula of the orbital magnetic quadrupole moment
(MQM) in periodic systems by using the gauge-covariant gradient expansion. This formula is …

We report the growth of single crystals of SrCu 2 As 2, SrCu 2 Sb 2, SrCu 2 (As 0.84 Sb 0.16)
2, and BaCu 2 Sb 2 using the self-flux technique and their structural, magnetic, thermal, and …

Odd-parity magnetic and magnetic toroidal multipoles in the absence of both spatial-
inversion and time-reversal symmetries are sources of multiferroic and nonreciprocal optical …