Je, Soong-Geun Kim, Duck-Ho Yoo, Sang-Cheol Min, Byoung-Chul Lee, Kyung-Jin Choe, Sug-Bong 2024-01-20T11:01:51Z 2024-01-20T11:01:51Z 2021-09-05 2013-12 1098-0121 https://pubs.kist.re.kr/handle/201004/127371 We demonstrate here that ultrathin ferromagnetic Pt/Co/Pt films with perpendicular magnetic anisotropy exhibit a sizable Dzyaloshinskii-Moriya interaction (DMI) effect. Such a DMI effect modifies the domain-wall (DW) energy density and consequently, results in an asymmetric DW expansion driven by an out-of-plane magnetic field under an in-plane magnetic field bias. From an analysis of the asymmetry, the DMI effect is estimated to be strong enough for the DW to remain in the Neel-type configuration in contrast to the general expectations of these materials. Our findings emphasize the critical role of the DMI effect on the DW dynamics as the underlying physics of the asymmetries that are often observed in spin-transfer-related phenomena. English AMER PHYSICAL SOC Asymmetric magnetic domain-wall motion by the Dzyaloshinskii-Moriya interaction Article 10.1103/PhysRevB.88.214401 1 PHYSICAL REVIEW B, v.88, no.21 PHYSICAL REVIEW B 88 21 scie scopus 000328569900002 2-s2.0-84890587465 Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Materials Science Physics Article SPIN-TORQUE WEAK FERROMAGNETISM DYNAMICS DRIVEN CREEP LAYER