Details

Autor(en) / Beteiligte

• Huy, H. H.
• Sasaki, J.
• Khang, N. H. D.
• Namba, S.
• Hai, P. N.
• Le, Q.
• York, B.
• Hwang, C.
• Liu, X.
• Gribelyuk, M.
• Xu, X.
• Le, S.
• Nagabhirava, R.
• Ho, M.
• Takano, H.

Titel

Large spin Hall angle in sputtered BiSb topological insulator on top of various ferromagnets with in-plane magnetization for SOT reader application

Ist Teil von

• IEEE transactions on magnetics, 2023-03, Vol.59 (3), p.1-1

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2023

Quelle

IEEE Xplore

Beschreibungen/Notizen

• A spin-orbit torque (SOT) reader using the inverse spin Hall effect was recently proposed as a candidate for magnetic recording beyond 4 Tbit/in 2 . However, SOT readers using conventional heavy metals has small output voltage and low signal-to-noise ratio (SNR) due to the smaller spin Hall angles of heavy metals. Demonstrated in this work is a large spin Hall angle of 2.6 ~ 5.1 in sputtered BiSb, a topological insulator, on top of various ferromagnets with in-plane magnetization. The spin Hall angle of BiSb is much larger than that of heavy metals, which is promising for SOT readers with large output and high SNR.