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38 papers
High-resolution neutron diffraction determination of noncollinear antiferromagnetic order in the honeycomb magnetoelectric FeNbO
Raktim Datta, Kapil Kumar, Dong Gun Oh +7
Magnetoelectric systems offer potential for device applications exploiting coupled states between electric and magnetic properties. Among magnetoelectric materials, \FNO has attrac…
Manipulation of the orbital angular momentum of soft x-ray beams by consecutive diffractive optics
Nazir Khan, Rahul Jangid, Taras Stanislavchuk +6
Production and manipulation of orbital angular momentum (OAM) of coherent soft x-ray beams is demonstrated utilizing consecutive diffractive optics. OAM addition is observed upon p…
Ferroaxial phonons in chiral and polar NiCo2TeO6
V. A. Martinez, Y. Gao, J. Yang +7
Perfect circular dichroism has been observed in the Raman scattering by the optical phonons in single chiral domain NiCo2TeO6 crystals. The selection rules for the optical phonons…
Spin-phonon interactions and magnetoelectric coupling in CoO ( = Nb, Ta)
K. Park, J. Kim, S. Choi +10
In order to explore the consequences of spin-orbit coupling on spin-phonon interactions in a set of chemically-similar mixed metal oxides, we measured the infrared vibrational prop…
Noncollinear magnetic order, in-plane anisotropy, and magnetoelectric coupling in a pyroelectric honeycomb antiferromagnet NiMoO
Poonam Yadav, Suheon Lee, G. L. Pascut +7
NiMoO is a pyroelectric honeycomb antiferromagnet exhibiting peculiar changes of its electric polarization at magnetic transitions. NiMoO stands…
Band-Mott mixing hybridizes the gap in FeMoO
K. Park, G. L. Pascut, G. Khanal +9
We combined optical spectroscopy and first principles electronic structure calculations to reveal the charge gap in the polar magnet FeMoO. Iron occupation on the octah…