Helical spin structures are expressions of magnetically induced chirality, entangling the
dipolar and magnetic orders in materials,,–. The recent discovery of helical van der Waals …

Nonreciprocal directional dichroism (NDD) is a phenomenon in which the optical absorption
is changed by reversing the direction of light propagation or the sign of the magnetic order …

Aurivillius phase Bi2LaNb1. 5Mn0. 5O9, derived from ferroelectric PbBi2Nb2O9 by
simultaneous substitution of the A-site and B-site cations, was synthesized using a molten …

We report large nonreciprocal optical absorption at shortwave infrared (SWIR) wavelengths
in the magnetoelectric (ME) antiferromagnet (AFM) LiNiPO 4. The difference in absorption …

The archetypal magnetoelectric (ME) antiferromagnet Cr 2 O 3, which has the diagonal
components of linear ME tensor, exhibits several different types of nonreciprocal optical …

Conventional magnetic memories rely on bistable magnetic states, such as the up and down
magnetization states in ferromagnets. Increasing the number of stable magnetic states in …

Parity-odd magnetoelectric multipoles such as magnetic quadrupoles and toroidal dipoles
contribute to various symmetry-dependent magnetic phenomena and formation of exotic …

Magnetoelectric phenomena are intimately linked to relativistic effects and also require the
material to break spatial inversion symmetry and time-reversal invariance. Magnetoelectric …

We show the directional dichroism in a collinear antiferromagnet MnTiO 3. The dichroism
between two distinctive antiferromagnetic states with opposite signs of staggered magnetic …

We report on optical excitations in the magnetically ordered phases of multiferroic Fe 1.86
Zn 0.14 Mo 3 O 8 in the frequency range 10–130 cm− 1 (0.3–3.9 THz). In the collinear easy …