Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffraction
Time-resolved x-ray diffraction has been used to measure the low-temperature thermal transport properties of a Pt/Gd3Fe5O12//Gd3Ga5O12 metal/oxide heterostructure relevant to applications in spin caloritronics. A pulsed femtosecond optical signal produces a rapid temperature rise in the Pt layer, fo...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC and ACA
2022-07-01
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| Series: | Structural Dynamics |
| Online Access: | http://dx.doi.org/10.1063/4.0000154 |
| _version_ | 1811206013421879296 |
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| author | Deepankar Sri Gyan Danny Mannix Dina Carbone James L. Sumpter Stephan Geprägs Maxim Dietlein Rudolf Gross Andrius Jurgilaitis Van-Thai Pham Hélène Coudert-Alteirac Jörgen Larsson Daniel Haskel Jörg Strempfer Paul G. Evans |
| author_facet | Deepankar Sri Gyan Danny Mannix Dina Carbone James L. Sumpter Stephan Geprägs Maxim Dietlein Rudolf Gross Andrius Jurgilaitis Van-Thai Pham Hélène Coudert-Alteirac Jörgen Larsson Daniel Haskel Jörg Strempfer Paul G. Evans |
| author_sort | Deepankar Sri Gyan |
| collection | DOAJ |
| description | Time-resolved x-ray diffraction has been used to measure the low-temperature thermal transport properties of a Pt/Gd3Fe5O12//Gd3Ga5O12 metal/oxide heterostructure relevant to applications in spin caloritronics. A pulsed femtosecond optical signal produces a rapid temperature rise in the Pt layer, followed by heat transport into the Gd3Fe5O12 (GdIG) thin film and the Gd3Ga5O12 (GGG) substrate. The time dependence of x-ray diffraction from the GdIG layer was tracked using an accelerator-based femtosecond x-ray source. The ultrafast diffraction measurements probed the intensity of the GdIG (1 −1 2) x-ray reflection in a grazing-incidence x-ray diffraction geometry. The comparison of the variation of the diffracted x-ray intensity with a model including heat transport and the temperature dependence of the GdIG lattice parameter allows the thermal conductance of the Pt/GdIG and GdIG//GGG interfaces to be determined. Complementary synchrotron x-ray diffraction studies of the low-temperature thermal expansion properties of the GdIG layer provide a precise calibration of the temperature dependence of the GdIG lattice parameter. The interfacial thermal conductance of the Pt/GdIG and GdIG//GGG interfaces determined from the time-resolved diffraction study is of the same order of magnitude as previous reports for metal/oxide and epitaxial dielectric interfaces. The thermal parameters of the Pt/GdIG//GGG heterostructure will aid in the design and implementation of thermal transport devices and nanostructures. |
| first_indexed | 2024-04-12T03:40:19Z |
| format | Article |
| id | doaj.art-c7857b780e874d75b0d83aadafab1829 |
| institution | Directory Open Access Journal |
| issn | 2329-7778 |
| language | English |
| last_indexed | 2024-04-12T03:40:19Z |
| publishDate | 2022-07-01 |
| publisher | AIP Publishing LLC and ACA |
| record_format | Article |
| series | Structural Dynamics |
| spelling | doaj.art-c7857b780e874d75b0d83aadafab18292022-12-22T03:49:18ZengAIP Publishing LLC and ACAStructural Dynamics2329-77782022-07-0194045101045101-1010.1063/4.0000154Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffractionDeepankar Sri Gyan0Danny Mannix1Dina Carbone2James L. Sumpter3Stephan Geprägs4Maxim Dietlein5Rudolf Gross6Andrius Jurgilaitis7Van-Thai Pham8Hélène Coudert-Alteirac9Jörgen Larsson10Daniel Haskel11Jörg Strempfer12Paul G. Evans13 University of Wisconsin-Madison, Madison, Wisconsin 53706, USA Université Grenoble Alpes, CNRS, Institut Néel, 38042 Grenoble, France MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden University of Wisconsin-Madison, Madison, Wisconsin 53706, USA Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA University of Wisconsin-Madison, Madison, Wisconsin 53706, USATime-resolved x-ray diffraction has been used to measure the low-temperature thermal transport properties of a Pt/Gd3Fe5O12//Gd3Ga5O12 metal/oxide heterostructure relevant to applications in spin caloritronics. A pulsed femtosecond optical signal produces a rapid temperature rise in the Pt layer, followed by heat transport into the Gd3Fe5O12 (GdIG) thin film and the Gd3Ga5O12 (GGG) substrate. The time dependence of x-ray diffraction from the GdIG layer was tracked using an accelerator-based femtosecond x-ray source. The ultrafast diffraction measurements probed the intensity of the GdIG (1 −1 2) x-ray reflection in a grazing-incidence x-ray diffraction geometry. The comparison of the variation of the diffracted x-ray intensity with a model including heat transport and the temperature dependence of the GdIG lattice parameter allows the thermal conductance of the Pt/GdIG and GdIG//GGG interfaces to be determined. Complementary synchrotron x-ray diffraction studies of the low-temperature thermal expansion properties of the GdIG layer provide a precise calibration of the temperature dependence of the GdIG lattice parameter. The interfacial thermal conductance of the Pt/GdIG and GdIG//GGG interfaces determined from the time-resolved diffraction study is of the same order of magnitude as previous reports for metal/oxide and epitaxial dielectric interfaces. The thermal parameters of the Pt/GdIG//GGG heterostructure will aid in the design and implementation of thermal transport devices and nanostructures.http://dx.doi.org/10.1063/4.0000154 |
| spellingShingle | Deepankar Sri Gyan Danny Mannix Dina Carbone James L. Sumpter Stephan Geprägs Maxim Dietlein Rudolf Gross Andrius Jurgilaitis Van-Thai Pham Hélène Coudert-Alteirac Jörgen Larsson Daniel Haskel Jörg Strempfer Paul G. Evans Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffraction Structural Dynamics |
| title | Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffraction |
| title_full | Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffraction |
| title_fullStr | Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffraction |
| title_full_unstemmed | Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffraction |
| title_short | Low-temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x-ray diffraction |
| title_sort | low temperature nanoscale heat transport in a gadolinium iron garnet heterostructure probed by ultrafast x ray diffraction |
| url | http://dx.doi.org/10.1063/4.0000154 |
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