Enhanced spin-orbit torque by engineering Pt resistivity in Pt/Co/AlOx structures
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jae Wook | - |
dc.contributor.author | Oh, Young-Wan | - |
dc.contributor.author | Park, Seung-Young | - |
dc.contributor.author | Figueroa, Adriana I. | - |
dc.contributor.author | van der Laan, Gerrit | - |
dc.contributor.author | Go, Gyungchoon | - |
dc.contributor.author | Lee, Kyung-Jin | - |
dc.contributor.author | Park, Byong-Guk | - |
dc.date.accessioned | 2021-09-03T03:05:48Z | - |
dc.date.available | 2021-09-03T03:05:48Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-08-03 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/82583 | - |
dc.description.abstract | The magnetization direction in heavy-metal (HM)/ferromagnet bilayers can be electrically controlled by spin-orbit torque (SOT); however, the efficiency of the SOT which depends on the spin-orbit coupling of the HM layer or its spin-Hall angle has to be improved further for actual applications. In this study, we report a significant enhancement of the spin-Hall effect of Pt and resultant SOT in Pt/Co/AlOx structures by controlling the Pt resistivity. We observed that the effective spin-Hall angle increases about three times as the resistivity of Pt layer is increased 1.6 times by changing the Ar deposition pressure from 3 to 50 mTorr. This enhancement in effective spin-Hall angle is confirmed by the reduction in the critical current for SOT-induced magnetization switching. Furthermore, x-ray absorption spectroscopy analysis reveals a non-negligible contribution of the interfacial spin-orbit coupling to the effective spin-Hall angle. Our result, the efficient control of effective spin Hall angle by controlling the HM resistivity, paves the way to improved switching efficiency in SOT-active devices. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.subject | RAY CIRCULAR-DICHROISM | - |
dc.subject | TOPOLOGICAL INSULATOR | - |
dc.subject | MAGNETIZATION | - |
dc.subject | LAYER | - |
dc.subject | SPINTRONICS | - |
dc.title | Enhanced spin-orbit torque by engineering Pt resistivity in Pt/Co/AlOx structures | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Kyung-Jin | - |
dc.identifier.doi | 10.1103/PhysRevB.96.064405 | - |
dc.identifier.scopusid | 2-s2.0-85028703993 | - |
dc.identifier.wosid | 000406860300005 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW B, v.96, no.6 | - |
dc.relation.isPartOf | PHYSICAL REVIEW B | - |
dc.citation.title | PHYSICAL REVIEW B | - |
dc.citation.volume | 96 | - |
dc.citation.number | 6 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | RAY CIRCULAR-DICHROISM | - |
dc.subject.keywordPlus | TOPOLOGICAL INSULATOR | - |
dc.subject.keywordPlus | MAGNETIZATION | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | SPINTRONICS | - |
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