Magnon Mode Selective Spin Transport in Compensated Ferrimagnets

Handle URI:
http://hdl.handle.net/10754/625576
Title:
Magnon Mode Selective Spin Transport in Compensated Ferrimagnets
Authors:
Cramer, Joel; Guo, Er-Jia ( 0000-0001-5702-225X ) ; Geprägs, Stephan; Kehlberger, Andreas; Ivanov, Yurii P. ( 0000-0003-0271-5504 ) ; Ganzhorn, Kathrin; Della Coletta, Francesco; Althammer, Matthias; Huebl, Hans; Gross, Rudolf; Kosel, Jürgen ( 0000-0002-8998-8275 ) ; Kläui, Mathias; Goennenwein, Sebastian T. B.
Abstract:
We investigate the generation of magnonic thermal spin currents and their mode selective spin transport across interfaces in insulating, compensated ferrimagnet/normal metal bilayer systems. The spin Seebeck effect signal exhibits a nonmonotonic temperature dependence with two sign changes of the detected voltage signals. Using different ferrimagnetic garnets, we demonstrate the universality of the observed complex temperature dependence of the spin Seebeck effect. To understand its origin, we systematically vary the interface between the ferrimagnetic garnet and the metallic layer, and by using different metal layers we establish that interface effects play a dominating role. They do not only modify the magnitude of the spin Seebeck effect signal but in particular also alter its temperature dependence. By varying the temperature, we can select the dominating magnon mode and we analyze our results to reveal the mode selective interface transmission probabilities for different magnon modes and interfaces. The comparison of selected systems reveals semiquantitative details of the interfacial coupling depending on the materials involved, supported by the obtained field dependence of the signal.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Cramer J, Guo E-J, Geprägs S, Kehlberger A, Ivanov YP, et al. (2017) Magnon Mode Selective Spin Transport in Compensated Ferrimagnets. Nano Letters 17: 3334–3340. Available: http://dx.doi.org/10.1021/acs.nanolett.6b04522.
Publisher:
American Chemical Society (ACS)
Journal:
Nano Letters
Issue Date:
13-Apr-2017
DOI:
10.1021/acs.nanolett.6b04522
Type:
Article
ISSN:
1530-6984; 1530-6992
Sponsors:
The authors express their gratitude to Professor Gerrit E. W. Bauer and Dr. Joe Barker for valuable discussions and the Institute for Materials Research at Tohoku University for the hospitality during a visiting researcher stay (M.K.). Furthermore, they would like to thank Professor Kathrin Dorr for the help in sample preparation. This work was supported by Deutsche Forschungsgemeinschaft (DFG) SPP 1538 Spin Caloric Transport, the Graduate School of Excellence Materials Science in Mainz (MAINZ, DFG/GSC 266), and the EU projects (IFOX, NMP3-LA-2012246102, INSPIN FP7-ICT-2013-X 612759) and the DAAD (SpinNet and MaHoJeRo during the manuscript preparation). During the manuscript preparation, this work was also partially supported by the U.S. Department of Energy (DOE), Office of Science (OS), Basic Energy Sciences (BES), and by the Laboratory Directed Research and Development (LDRD) Program of Oak Ridge National Laboratory (ORNL) managed by UT-Battelle, LLC, for the U.S. DOE.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.6b04522
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorCramer, Joelen
dc.contributor.authorGuo, Er-Jiaen
dc.contributor.authorGeprägs, Stephanen
dc.contributor.authorKehlberger, Andreasen
dc.contributor.authorIvanov, Yurii P.en
dc.contributor.authorGanzhorn, Kathrinen
dc.contributor.authorDella Coletta, Francescoen
dc.contributor.authorAlthammer, Matthiasen
dc.contributor.authorHuebl, Hansen
dc.contributor.authorGross, Rudolfen
dc.contributor.authorKosel, Jürgenen
dc.contributor.authorKläui, Mathiasen
dc.contributor.authorGoennenwein, Sebastian T. B.en
dc.date.accessioned2017-10-03T12:49:26Z-
dc.date.available2017-10-03T12:49:26Z-
dc.date.issued2017-04-13en
dc.identifier.citationCramer J, Guo E-J, Geprägs S, Kehlberger A, Ivanov YP, et al. (2017) Magnon Mode Selective Spin Transport in Compensated Ferrimagnets. Nano Letters 17: 3334–3340. Available: http://dx.doi.org/10.1021/acs.nanolett.6b04522.en
dc.identifier.issn1530-6984en
dc.identifier.issn1530-6992en
dc.identifier.doi10.1021/acs.nanolett.6b04522en
dc.identifier.urihttp://hdl.handle.net/10754/625576-
dc.description.abstractWe investigate the generation of magnonic thermal spin currents and their mode selective spin transport across interfaces in insulating, compensated ferrimagnet/normal metal bilayer systems. The spin Seebeck effect signal exhibits a nonmonotonic temperature dependence with two sign changes of the detected voltage signals. Using different ferrimagnetic garnets, we demonstrate the universality of the observed complex temperature dependence of the spin Seebeck effect. To understand its origin, we systematically vary the interface between the ferrimagnetic garnet and the metallic layer, and by using different metal layers we establish that interface effects play a dominating role. They do not only modify the magnitude of the spin Seebeck effect signal but in particular also alter its temperature dependence. By varying the temperature, we can select the dominating magnon mode and we analyze our results to reveal the mode selective interface transmission probabilities for different magnon modes and interfaces. The comparison of selected systems reveals semiquantitative details of the interfacial coupling depending on the materials involved, supported by the obtained field dependence of the signal.en
dc.description.sponsorshipThe authors express their gratitude to Professor Gerrit E. W. Bauer and Dr. Joe Barker for valuable discussions and the Institute for Materials Research at Tohoku University for the hospitality during a visiting researcher stay (M.K.). Furthermore, they would like to thank Professor Kathrin Dorr for the help in sample preparation. This work was supported by Deutsche Forschungsgemeinschaft (DFG) SPP 1538 Spin Caloric Transport, the Graduate School of Excellence Materials Science in Mainz (MAINZ, DFG/GSC 266), and the EU projects (IFOX, NMP3-LA-2012246102, INSPIN FP7-ICT-2013-X 612759) and the DAAD (SpinNet and MaHoJeRo during the manuscript preparation). During the manuscript preparation, this work was also partially supported by the U.S. Department of Energy (DOE), Office of Science (OS), Basic Energy Sciences (BES), and by the Laboratory Directed Research and Development (LDRD) Program of Oak Ridge National Laboratory (ORNL) managed by UT-Battelle, LLC, for the U.S. DOE.en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acs.nanolett.6b04522en
dc.subjectcompensated ferrimagneten
dc.subjectmagnon couplingen
dc.subjectSpin currenten
dc.subjectspin Seebeck effecten
dc.titleMagnon Mode Selective Spin Transport in Compensated Ferrimagnetsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalNano Lettersen
dc.contributor.institutionGraduate School of Excellence Materials Science in Mainz, Mainz, 55128, , Germanyen
dc.contributor.institutionInstitut für Physik, Johannes Gutenberg-Universität Mainz, Mainz, 55099, , Germanyen
dc.contributor.institutionQuantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, , United Statesen
dc.contributor.institutionWalther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, 85748, , , Germanyen
dc.contributor.institutionSchool of Natural Sciences, Far Eastern Federal University, Vladivostok, 690950, , Russian Federationen
dc.contributor.institutionErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, A-8700, , , Austriaen
dc.contributor.institutionPhysik-Department, Technische Universität München, Garching, 85748, , Germanyen
dc.contributor.institutionNanosystems Initiative Munich (NIM), Schellingstraße 4, München, 80799, , Germanyen
dc.contributor.institutionInstitut für Festkörperphysik, Technische Universität Dresden, Dresden, 01062, , Germanyen
kaust.authorIvanov, Yurii P.en
kaust.authorKosel, Jürgenen
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