Details

Autor(en) / Beteiligte

• Hao, Qiang
• Xiao, Gang

Titel

Giant spin Hall effect and magnetotransport in a Ta/CoFeB/MgO layered structure: A temperature dependence study

Ist Teil von

• Physical review. B, Condensed matter and materials physics, 2015-06, Vol.91 (22), Article 224413

Erscheinungsjahr

2015

Quelle

PROLA

Beschreibungen/Notizen

• Using an optimized fabrication and magnetic thermal annealing process, we have obtained a high quality [beta]-Ta/CoFeB/MgO layered structure with strong spin-orbit coupling. We have studied electron transport, magnetotransport, and magnetic properties of this system over a wide temperature range between 5 and 300 K. We present the results of resistivity, magnetization, giant spin Hall effect (GSHE), perpendicular magnetic anisotropy, and magnetic switching phase diagram. [beta]-Ta exhibits a large spin Hall angle of 0.14, and shows evidence of spin Hall angle's scaling with resistivity quadratic ally. The optimized [beta]-Ta/CoFeB/MgO system displays the lowest switching current density among similar systems. Our comprehensive study will benefit applications of GSHE in spintronics.