Large spin-orbit torque efficiency in PtBi2 film
Li, Shangkun1; Luo, Yanxiang1; Chen, Qian1; Lv, Weiming1,2; Song, Yuhang3; Liu, Long3; Zhao, Xiaotian3; Liu, Wei3; Zhang, Baoshun1,2; Zeng, Zhongming1,2
Corresponding AuthorZeng, Zhongming(
AbstractBulk PtBi2 has attracted much attention for its topological semi-metallic electronic properties and highly promising applications in spintronics. Here, we report large spin-orbit torque (SOT) efficiency in the sputtered PtBi2 alloy with the trigonal-phase. From spin-torque-induced ferromagnetic resonance measurements, the SOT efficiency of 5 nm PtBi2 is estimated to be & SIM;0.2. Moreover, the spin Hall conductivity of PtBi2 [& SIM;1 x 10(5) PLANCK CONSTANT OVER TWO PI/2e (omega m)(-1)] is comparable to that of topological materials, such PtTe2 and Bi2Te3. The PtBi2 film has much lower resistance than that of Bi-based topological materials, which makes it a useful candidate for application. The results suggest that the PtBi2 alloy is promising for applications in magnetic memory and logic devices driven by SOT.
Funding OrganizationChina Postdoctoral Science Foundation ; Natural Science Foundation of Jiangsu Province
Indexed BySCI
Funding ProjectChina Postdoctoral Science Foundation[12004415] ; China Postdoctoral Science Foundation[51732010] ; China Postdoctoral Science Foundation[51802341] ; Natural Science Foundation of Jiangsu Province[2019M661965] ; Natural Science Foundation of Jiangsu Province[2020M671592] ; [BK20200255]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000751392400017
PublisherAIP Publishing
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Document Type期刊论文
Corresponding AuthorZeng, Zhongming
Affiliation1.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Key Lab Multifunct Nanomat & Smart Syst, Suzhou 215123, Jiangsu, Peoples R China
2.Chinese Acad Sci, Nanchang Nanodevices & Technol Div, Suzhou Inst Nanotech & Nanobion, Nanchang 330200, Jiangxi, Peoples R China
3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
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GB/T 7714
Li, Shangkun,Luo, Yanxiang,Chen, Qian,et al. Large spin-orbit torque efficiency in PtBi2 film[J]. APPLIED PHYSICS LETTERS,2021,119(13):5.
APA Li, Shangkun.,Luo, Yanxiang.,Chen, Qian.,Lv, Weiming.,Song, Yuhang.,...&Zeng, Zhongming.(2021).Large spin-orbit torque efficiency in PtBi2 film.APPLIED PHYSICS LETTERS,119(13),5.
MLA Li, Shangkun,et al."Large spin-orbit torque efficiency in PtBi2 film".APPLIED PHYSICS LETTERS 119.13(2021):5.
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