An insulating doped antiferromagnet with low magnetic symmetry as a room temperature spin conduit

dc.contributor.authorRoss, Andrew
dc.contributor.authorLebrun, Romain
dc.contributor.authorBaldrati, Lorenzo
dc.contributor.authorKamra, Akashdeep
dc.contributor.authorGomonay, Olena
dc.contributor.authorDing, Shilei
dc.contributor.authorSchreiber, Felix
dc.contributor.authorBackes, Dirk
dc.contributor.authorMaccherozzi, Francesco
dc.contributor.authorGrave, Daniel A.
dc.contributor.authorRothschild, Avner
dc.contributor.authorSinova, Jairo
dc.contributor.authorKläui, Mathias
dc.date.accessioned2021-01-12T10:46:18Z
dc.date.available2021-01-12T10:46:18Z
dc.date.issued2020
dc.description.abstractWe report room-temperature long-distance spin transport of magnons in antiferromagnetic thin-film hematite doped with Zn. The additional dopants significantly alter the magnetic anisotropies, resulting in a complex equilibrium spin structure that is capable of efficiently transporting spin angular momentum at room temperature without the need for a well-defined, pure easy-axis or easy-plane anisotropy. We find intrinsic magnon spin-diffusion lengths of up to 1.5 mu m, and magnetic domain governed decay lengths of 175nm for the low-frequency magnons, through electrical transport measurements demonstrating that the introduction of nonmagnetic dopants does not strongly reduce the transport length scale, showing that the magnetic damping of hematite is not significantly increased. We observe a complex field dependence of the nonlocal signal independent of the magnetic state visible, in the local magnetoresistance and direct magnetic imaging of the antiferromagnetic domain structure. We explain our results in terms of a varying and applied field-dependent ellipticity of the magnon modes reaching the detector electrode allowing us to tune the spin transport. Published under license by AIP Publishing.en_GB
dc.identifier.doihttp://doi.org/10.25358/openscience-5547
dc.identifier.urihttps://openscience.ub.uni-mainz.de/handle/20.500.12030/5551
dc.language.isoengde
dc.rightsInC-1.0*
dc.rights.urihttps://rightsstatements.org/vocab/InC/1.0/*
dc.subject.ddc530 Physikde_DE
dc.subject.ddc530 Physicsen_GB
dc.titleAn insulating doped antiferromagnet with low magnetic symmetry as a room temperature spin conduiten_GB
dc.typeZeitschriftenaufsatzde
jgu.journal.issue24de
jgu.journal.titleApplied physics lettersde
jgu.journal.volume117de
jgu.organisation.departmentFB 08 Physik, Mathematik u. Informatikde
jgu.organisation.nameJohannes Gutenberg-Universität Mainz
jgu.organisation.number7940
jgu.organisation.placeMainz
jgu.organisation.rorhttps://ror.org/023b0x485
jgu.pages.alternative242405de
jgu.publisher.doi10.1063/5.0032940
jgu.publisher.issn0003-6951de
jgu.publisher.nameAmerican Inst. of Physicsde
jgu.publisher.placeMelville, NYde
jgu.publisher.urihttps://doi.org/10.1063/5.0032940de
jgu.publisher.year2020
jgu.rights.accessrightsopenAccess
jgu.subject.ddccode530de
jgu.type.contenttypeScientific articlede
jgu.type.dinitypeArticleen_GB
jgu.type.resourceTextde
jgu.type.versionAccepted versionde

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