This paper reports a novel magnetic state in GaV₄Se₈, emerging exclusively in samples with mesoscale polar domains. This state is characterized by a sharp anomaly in magnetic susceptibility and torque, distinct from transitions between cycloidal, Néel-type skyrmion lattice, and ferromagnetic states. The anomaly is attributed to the transformation of magnetic textures within polar domain walls (DWs) to the ferromagnetic state, driven by the mismatch of spin spirals in adjacent domains. A magneto-current anomaly suggests strong magnetoelectric contributions from these DW-confined states, suggesting polar DWs as a platform for exploring novel magnetism.
Publisher
npj Quantum Materials
Published On
Jul 06, 2020
Authors
Korbinian Geirhos, Boris Gross, Bertalan G. Szigeti, Andrea Mehlin, Simon Philipp, Jonathan S. White, Robert Cubitt, Sebastian Widmann, Somnath Ghara, Peter Lunkenheimer, Vladimir Tsurkan, Erik Neuber, Dmytro Ivaneyko, Peter Milde, Lukas M. Eng, Andrey O. Leonov, Sándor Bordács, Martino Poggio, István Kézsmárki
Tags
GaV₄Se₈
magnetic state
polar domains
magnetic susceptibility
magnetoelectric
domain walls
magnetic textures
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