Triangular and Sawtooth Magnetic Domains in Measuring the Dzyaloshinskii-Moriya Interaction

• DOI: 10.1103/physrevapplied.10.064014
• Publication Date: 2018-12-06T12:31:13Z
• Authors: Kyoung-Woong Moon; Jun Woo Choi; Changsoo Kim; Jungbum Yoon; Dong-Ok Kim; Kyung Mee Song; Byong Sun Chun; Dongseuk Kim; Chanyong Hwang
• Keywords: Sawtooth wave; Domain wall (magnetism)

How might we measure the Dzyaloshinskii-Moriya interaction (DMI), which can be so important in spintronics? When this magnetic exchange is small, knowing actual value becomes significant, since operating speed proportional to it spintronic devices based on domain-wall movement. The authors develop a method for measuring weak DMI: current and field are applied perpendicularly magnetized thin film, characteristic morphology of domains that form observed, DMI obtained from angles present unusual domain shapes. This will improve engineering logic memory applications.