인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2026.3
- 수록면
- 21 - 34 (14page)
- DOI
- 10.4283/JMAG.2026.31.1.21
이용수
초록· 키워드
Spin-orbit torque (SOT) offers efficient magnetization control using spin currents generated by the spin Hall effect and/or the Rashba-Edelstein effect through charge-to-spin conversion. Quantitative evaluation of the SOT efficiency is crucial for understanding charge-to-spin conversion and optimizing energy-efficient spintronic devices. We evaluate the SOT efficiency in Ta/CoFeB bilayers with different magnetic anisotropies using harmonic Hall measurements, which allow the extraction of damping-like and field-like effective magnetic fields. From these measurements, the effective spin Hall angle, corresponding to the charge-to-spin conversion ratio, is determined to quantify the SOT efficiency. The effective spin Hall angles are found to be -0.052±0.002 and -0.052±0.004 for the up and down magnetization states of the perpendicularly magnetized sample, respectively, and -0.051±0.001 for the in-plane magnetized sample. These results demonstrate that the SOT efficiency remains nearly identical, irrespective of magnetic anisotropy, when the same spin-current source (a 4-nm-thick Ta layer) is employed.
상세정보 수정요청해당 페이지 내 제목·저자·목차·페이지정보가 잘못된 경우 알려주세요!
목차
- 1. Introduction
- 2. The Effect of the Oscillatory Motion of Magnetization under Spin-Orbit Torque on Hall Resistances with an AC Current
- 3. Determination of the Effective Spin Hall Angle from Effective Fields
- 4. Effective Fields of SOT in PMA Systems
- 5. Effective Fields of SOT in IMA Systems
- 6. Conclusion
- References