[18p-S2_201-1~8] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[18p-S2_201-7] Control of Magnetism in Topological Surfaces by Chiral Ionic Gating

〇Hideki Matsuoka¹, Amaki Moriyama², Tomohiro Hori^1,3, Yoshinori Tokura^3,4,5, Yoshihiro Iwasa^3,4, Shu Seki², Masayuki Suda^2,6, Naoya Kanazawa¹ (1.IIS. Univ. of Tokyo, 2.Dept. of Mol. Eng., Kyoto Univ., 3.Dept. of Appl. Phys., Univ. of Tokyo, 4.RIKEN CEMS, 5.Tokyo Coll., Univ. of Tokyo, 6.Dept. of Chem., Nagoya Univ.)

Keywords:

CISS,ionic gating,topology

Breaking chiral symmetry offers new tools for controlling spins and magnetism beyond conventional symmetry methods, as represented by chiral-induced spin selectivity (CISS). In this study, we realize gate-tunable magnetism in FeSi(111) thin films, which exhibit surface ferromagnetism originating from topological surface states, by employing a chiral ionic liquid. In this presentation, we report results of the modulation of magnetic parameters via chiral ionic gating and the emergence of domain polarization coupled to chirality of ionic gating.