Yoon, Jaesung Kim, Minhwan Lee, Seong-Hyub Park, Jung-Hyun Kim, Kyoung-Whan Kim, Dae-Yun Kim, Duck-Ho Choe, Sug-Bong 2025-03-23T11:30:14Z 2025-03-23T11:30:14Z 2025-03-19 2025-04 1530-6984 https://pubs.kist.re.kr/handle/201004/152072 Reducing the dimensionality in layered materials typically yields properties distinct from bulk properties. In systems with broken inversion symmetry, strong spin-orbit coupling induces relativistic electron interactions such as the Rashba-Edelstein effect (REE). Initially proposed in two-dimensional magnets, applying the REE theory to real three-dimensional systems poses challenges, necessitating experimental validation. In this study, we empirically ascertained an REE-induced intrinsic and extrinsic fundamental unity between two distinct and dissimilar phenomena, namely, charge-to-spin conversion and chiral-spin alignment. Atomically thin quasi-two-dimensional ferromagnetic materials were used to observe such universal unity by examining the thickness dependences of the Heisenberg exchange interaction, the Dzyaloshinskii-Moriya interaction, and spin-orbit torques. The results revealed a correlation that is highly consistent with the underlying theoretical REE model. These findings not only highlight the role of REE in fundamental physics but also illuminate the intricate impact of interfacial effects on magnetic materials. English American Chemical Society Intrinsic and Extrinsic Unity for Chiral-Spin Alignment and Charge-to-Spin Conversion Induced by the Rashba-Edelstein Effect Article 10.1021/acs.nanolett.4c05360 1 Nano Letters, v.25, no.13, pp.5097 - 5102 Nano Letters 25 13 5097 5102 N scie scopus 001437828800001 2-s2.0-85219576007 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Early Access Rashba-Edelstein effect spin-orbittorque spin Hall effect charge-to-spin conversion chiral-spin alignment Dzyaloshinskii-Moriyainteraction