Planar surfaces of point dipoles as a platform for 2d magnetic structure research

SINDY JULIETH RODRÍGUEZ SOTELO; IGOR STANKOVIC; MARIO PASSEGGI; MYRIAM H. AGUIRRE; CARLOS GARCÍA

Belgrado

Congreso; The 11th Conference of the Balkan Physical Union (BPU11 Congress); 2022

Institute of Physics Belgrade

Our system consists of planar magnetic structures created by the assembly of point dipoles. The departure point of this work is the known degeneracy of ground states in planar square and triangular packings. The square lattice has a particularly interesting antiferromagnetic ground state exhibiting a transformation from percolating antiferromagnetic chains of dipoles pointing head-tail to a remarkable magnetic vortex configuration [1]. We follow the breakup of degeneracy observed in planar square and triangular packings with a mismatch of the orientation of stacked lattices. We further investigate the ability of these surfaces to carry spin current and manifest the magnetoelectric effect [2].References[1] I. Stanković, M. Dašić, J.A. Otálora, C. García A platform for nanomagnetism–assembled ferromagnetic and antiferromagnetic dipolar tubes, Nanoscale 11(5), 2521-2535 (2019).[2] H. Katsura, N. Nagaosa, and A. V. Balatsky, Phys. Rev. Lett. 95, 057205 (2005).