Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures
We study the transport of thermally excited non-equilibrium magnons through the ferrimagnetic insulator YIG using two electrically isolated Pt strips as injector and detector. The diffusing magnons induce a non-local inverse spin Hall voltage in the detector corresponding to the so-called non-local...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2017-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4986848 |
| _version_ | 1811240224394575872 |
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| author | Kathrin Ganzhorn Tobias Wimmer Joel Cramer Richard Schlitz Stephan Geprägs Gerhard Jakob Rudolf Gross Hans Huebl Mathias Kläui Sebastian T. B. Goennenwein |
| author_facet | Kathrin Ganzhorn Tobias Wimmer Joel Cramer Richard Schlitz Stephan Geprägs Gerhard Jakob Rudolf Gross Hans Huebl Mathias Kläui Sebastian T. B. Goennenwein |
| author_sort | Kathrin Ganzhorn |
| collection | DOAJ |
| description | We study the transport of thermally excited non-equilibrium magnons through the ferrimagnetic insulator YIG using two electrically isolated Pt strips as injector and detector. The diffusing magnons induce a non-local inverse spin Hall voltage in the detector corresponding to the so-called non-local spin Seebeck effect (SSE). We measure the non-local SSE as a function of temperature and strip separation. In experiments at room temperature we observe a sign change of the non-local SSE voltage at a characteristic strip separation d0, in agreement with previous investigations. At lower temperatures however, we find a strong temperature dependence of d0. This suggests that both the angular momentum transfer across the YIG/Pt interface as well as the transport mechanism of the magnons in YIG as a function of temperature must be taken into account to describe the non-local SSE. |
| first_indexed | 2024-04-12T13:15:15Z |
| format | Article |
| id | doaj.art-67dbf16441b6440a9e5516f9d748b574 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-12T13:15:15Z |
| publishDate | 2017-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-67dbf16441b6440a9e5516f9d748b5742022-12-22T03:31:43ZengAIP Publishing LLCAIP Advances2158-32262017-08-0178085102085102-710.1063/1.4986848061707ADVTemperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructuresKathrin Ganzhorn0Tobias Wimmer1Joel Cramer2Richard Schlitz3Stephan Geprägs4Gerhard Jakob5Rudolf Gross6Hans Huebl7Mathias Kläui8Sebastian T. B. Goennenwein9Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyWalther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyInstitute of Physics, Johannes Gutenberg-University Mainz, 55099 Mainz, GermanyWalther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyWalther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyInstitute of Physics, Johannes Gutenberg-University Mainz, 55099 Mainz, GermanyWalther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyWalther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyInstitute of Physics, Johannes Gutenberg-University Mainz, 55099 Mainz, GermanyWalther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, GermanyWe study the transport of thermally excited non-equilibrium magnons through the ferrimagnetic insulator YIG using two electrically isolated Pt strips as injector and detector. The diffusing magnons induce a non-local inverse spin Hall voltage in the detector corresponding to the so-called non-local spin Seebeck effect (SSE). We measure the non-local SSE as a function of temperature and strip separation. In experiments at room temperature we observe a sign change of the non-local SSE voltage at a characteristic strip separation d0, in agreement with previous investigations. At lower temperatures however, we find a strong temperature dependence of d0. This suggests that both the angular momentum transfer across the YIG/Pt interface as well as the transport mechanism of the magnons in YIG as a function of temperature must be taken into account to describe the non-local SSE.http://dx.doi.org/10.1063/1.4986848 |
| spellingShingle | Kathrin Ganzhorn Tobias Wimmer Joel Cramer Richard Schlitz Stephan Geprägs Gerhard Jakob Rudolf Gross Hans Huebl Mathias Kläui Sebastian T. B. Goennenwein Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures AIP Advances |
| title | Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures |
| title_full | Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures |
| title_fullStr | Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures |
| title_full_unstemmed | Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures |
| title_short | Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures |
| title_sort | temperature dependence of the non local spin seebeck effect in yig pt nanostructures |
| url | http://dx.doi.org/10.1063/1.4986848 |
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