Electric field control of chiral magnetic domains in the high-temperature multiferroic CuO

Electric field control of chiral magnetic domains in the high-temperature multiferroic CuO

We have studied the high temperature multiferroic cupric oxide using polarized neutron diffraction as a function of temperature and applied electric field. We find that the chiral domain population can be varied using an external electric field applied along the b axis. Using representation analysis...

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Dades bibliogràfiques
Autors principals: Babkevich, P, Poole, A, Johnson, R, Roessli, B, Prabhakaran, D, Boothroyd, A
Format: Journal article
Idioma:English
Publicat: 2012
Descripció
Sumari:We have studied the high temperature multiferroic cupric oxide using polarized neutron diffraction as a function of temperature and applied electric field. We find that the chiral domain population can be varied using an external electric field applied along the b axis. Using representation analysis we derive the incommensurate magnetic structure in the multiferroic phase. The origin of the magnetoelectric coupling is consistent with models based on the inverse Dzyaloshinskii-Moriya interaction, but is different from the simple cycloidal mechanism.

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