Preprint article · Journal article
Dzyaloshinskii-Moriya interaction and the magnetic ground state in magnetoelectric LiCoPO4
Neutrons and X-rays for Materials Physics, Department of Physics, Technical University of Denmark1
Department of Physics, Technical University of Denmark2
Paul Scherrer Institute3
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark4
Department of Energy Conversion and Storage, Technical University of Denmark5
Technical University of Denmark6
Iowa State University7
Magnetic structures are investigated by means of neutron diffraction to shine a light on the intricate details that are believed to be key to understanding the magnetoelectric effect in LiCoPO4. At zero field, a spontaneous spincanting of ϕ = 7(1)° is found. The spins tilt away from the easy b-axis toward c.
Symmetry considerations lead to the magnetic point group m'z, which is consistent with the previously observed magnetoelectric tensorform and weak ferromagnetic moment along b. For magnetic fields applied along a, the induced ferromagnetic moment couples via the Dzyaloshinskii-Moriya interaction to yield an additional field-induced spin canting.
An upper limitto the size of the interaction is estimated from the canting angle.
| Language: | English |
|---|---|
| Year: | 2019 |
| ISSN: | 24699969 , 24699950 , 1550235x and 10980121 |
| Types: | Preprint article and Journal article |
| DOI: | 10.1103/PhysRevB.99.104421 |
| ORCIDs: | 0000-0003-4118-5702 , Fogh, Ellen , Sørensen, Michael Korning , Christensen, Niels Bech and Toft-Petersen, Rasmus |
