Abstract
We have studied the generation of spin-orbit torques in Pt/Co/Pt trilayers fabricated on Gd3Ga5O12 (GGG) and commonly used SiO2 substrates. By fabricating Pt/Co/Pt trilayers with symmetric thicknesses of the top and bottom Pt layers, it has been confirmed that complete cancellation of both fieldlike and dampinglike torques can be obtained on the GGG substrate. However, the spin-orbit torques cannot be completely canceled out on the SiO2 substrate, which suggests that a GGG substrate is more suitable for precise measurements of the spin-orbit torques. We have also fabricated asymmetric Pt/Co/Pt trilayers on a GGG substrate to generate nonzero spin-orbit torques, and a relatively strong dampinglike torque has been measured accompanied with a fieldlike torque which is about four times smaller. Furthermore, by conducting the vector measurements of the spin-orbit torques from 300 to 10 K, it has been found that the dampinglike torque only slightly varies with temperatures.
| Original language | English |
|---|---|
| Article number | 214417 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 94 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2016 Dec 19 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Spin-orbit torques in asymmetric Pt/Co/Pt structures. / An, Hongyu; Nakayama, Hiroyasu; Kanno, Yusuke; Nomura, Akiyo; Haku, Satoshi; Ando, Kazuya.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 94, No. 21, 214417, 19.12.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spin-orbit torques in asymmetric Pt/Co/Pt structures
AU - An, Hongyu
AU - Nakayama, Hiroyasu
AU - Kanno, Yusuke
AU - Nomura, Akiyo
AU - Haku, Satoshi
AU - Ando, Kazuya
PY - 2016/12/19
Y1 - 2016/12/19
N2 - We have studied the generation of spin-orbit torques in Pt/Co/Pt trilayers fabricated on Gd3Ga5O12 (GGG) and commonly used SiO2 substrates. By fabricating Pt/Co/Pt trilayers with symmetric thicknesses of the top and bottom Pt layers, it has been confirmed that complete cancellation of both fieldlike and dampinglike torques can be obtained on the GGG substrate. However, the spin-orbit torques cannot be completely canceled out on the SiO2 substrate, which suggests that a GGG substrate is more suitable for precise measurements of the spin-orbit torques. We have also fabricated asymmetric Pt/Co/Pt trilayers on a GGG substrate to generate nonzero spin-orbit torques, and a relatively strong dampinglike torque has been measured accompanied with a fieldlike torque which is about four times smaller. Furthermore, by conducting the vector measurements of the spin-orbit torques from 300 to 10 K, it has been found that the dampinglike torque only slightly varies with temperatures.
AB - We have studied the generation of spin-orbit torques in Pt/Co/Pt trilayers fabricated on Gd3Ga5O12 (GGG) and commonly used SiO2 substrates. By fabricating Pt/Co/Pt trilayers with symmetric thicknesses of the top and bottom Pt layers, it has been confirmed that complete cancellation of both fieldlike and dampinglike torques can be obtained on the GGG substrate. However, the spin-orbit torques cannot be completely canceled out on the SiO2 substrate, which suggests that a GGG substrate is more suitable for precise measurements of the spin-orbit torques. We have also fabricated asymmetric Pt/Co/Pt trilayers on a GGG substrate to generate nonzero spin-orbit torques, and a relatively strong dampinglike torque has been measured accompanied with a fieldlike torque which is about four times smaller. Furthermore, by conducting the vector measurements of the spin-orbit torques from 300 to 10 K, it has been found that the dampinglike torque only slightly varies with temperatures.
UR - http://www.scopus.com/inward/record.url?scp=85007470713&partnerID=8YFLogxK
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U2 - 10.1103/PhysRevB.94.214417
DO - 10.1103/PhysRevB.94.214417
M3 - Article
AN - SCOPUS:85007470713
VL - 94
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 21
M1 - 214417
ER -