Challenges in electrical detection of spin-orbit torque in Ir20Mn80/Pt hetero-structures

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dc.authoridPiskin, Hasan/0000-0001-9927-4930
dc.authoridGOKSAL, CEMAL ILKIN/0000-0002-2827-3276
dc.authoridKOCAMAN, BAYRAM/0000-0002-9439-3604
dc.contributor.authorGoksal, Ilkin
dc.contributor.authorPiskin, Hasan
dc.contributor.authorKocaman, Bayram
dc.contributor.authorAkin, Kutay
dc.contributor.authorCay, Dogukan
dc.contributor.authorSelvi, Ege
dc.contributor.authorKarakas, Vedat
dc.date.accessioned2024-12-24T19:31:00Z
dc.date.available2024-12-24T19:31:00Z
dc.date.issued2023
dc.departmentSiirt Üniversitesi
dc.description.abstractManipulation of antiferromagnetic sublattice orientations, a key challenge in spintronic device applications, requires unconventional methods such as current induced torques including Spin Transfer Torque (STT) and Spin-Orbit Torque (SOT). In order to observe the deviation of the Neel vector from the anisotropy axis, one of the simplest approaches is the electrical detection, whereby one monitors the change in resistance as a function of applied current. In this work, we have investigated the conditions under which an ultra-thin metallic antiferromagnet, Ir20Mn80 becomes susceptible to SOT effects by studying antiferromagnetic layer structure and thickness dependence in antiferromagnetic metal (Ir20Mn80)/heavy metal (Pt) superlattices. Our electrical measurements reveal that in bilayer structures there exists a shallow range of Ir20Mn80 thicknesses (similar to 1-2 nm) for which SOT driven control of spins is apparent, whereas for lower thicknesses incomplete sublattice formation and for higher thicknesses improved thermal stability prohibits vulnerability to spin currents. Furthermore, in multilayers, structural changes in Ir20Mn80 layer quenches local torques due to stronger (111) magnetocrystalline anisotropy. These results suggest that an exhaustive optimization of the antiferromagnet parameters is crucial for the successful deployment of spintronic devices.
dc.description.sponsorshipU.S. Department of Energy, Office of Science, Materials Science and Engineering Division, Basic Energy Sciences (BES); U.S. DOE, Office of Basic Energy Sciences [DE-AC02-06CH11357]; Bogazici University Research Fund [17B03D3]; U.S. Department of State Fulbright Visiting Scholar Program; Bogazici University Research Fund BAP [20B03M6]; TUBITAK [118F116, 118F431, 2214/A]
dc.description.sponsorshipWork at Argonne was supported by the U.S. Department of Energy, Office of Science, Materials Science and Engineering Division, Basic Energy Sciences (BES). Work performed at the Center for Nanoscale Materials, a U.S. Department of Energy Office of Science User Facility, was supported by the U.S. DOE, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. O.O. and V.K. acknowledge support from Bogazici University Research Fund (17B03D3), TUBITAK 2214/A, and the U.S. Department of State Fulbright Visiting Scholar Program. Work at Bogazici University was supported by Bogazici University Research Fund BAP project number 20B03M6 and TUBITAK project numbers 118F116 and 118F431.
dc.identifier.doi10.3233/JAE-220298
dc.identifier.endpage13
dc.identifier.issn1383-5416
dc.identifier.issn1875-8800
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85173255874
dc.identifier.scopusqualityQ3
dc.identifier.startpage3
dc.identifier.urihttps://doi.org/10.3233/JAE-220298
dc.identifier.urihttps://hdl.handle.net/20.500.12604/7770
dc.identifier.volume73
dc.identifier.wosWOS:001076816100002
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIos Press
dc.relation.ispartofInternational Journal of Applied Electromagnetics and Mechanics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectAntiferromagnets
dc.subjectspin Hall effect
dc.subjectVNA-FMR
dc.subjectelectronic transport
dc.titleChallenges in electrical detection of spin-orbit torque in Ir20Mn80/Pt hetero-structures
dc.typeArticle

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