Resonant nanodiffraction x-ray imaging reveals role of magnetic domains in complex oxide spin caloritronics

Spin electronic devices based on crystalline oxide layers with nanoscale thicknesses involve complex structural and magnetic phenomena, including magnetic domains and the coupling of the magnetism to elastic and plastic crystallographic distortion. The magnetism of buried nanoscale layers has a substantial impact on spincaloritronic devices incorporating garnets and other oxides exhibiting the spin Seebeck effect (SSE). Synchrotron hard x-ray nanobeam diffraction techniques combine structural, elemental, and magnetic sensitivity and allow the magnetic domain configuration and structural distortion to be probed in buried layers simultaneously. Resonant scattering at the Gd L2 edge of Gd3Fe5O12 layers yields magnetic contrast with both linear and circular incident x-ray polarization. Domain patterns facet to form low-energy domain wall orientations but also are coupled to elastic features linked to epitaxial growth. Nanobeam magnetic diffraction images reveal diverse magnetic microstructure within emerging SSE materials and a strong coupling of the magnetism to crystallographic distortion.

Marks, Samuel D.University of Wisconsin-Madison (författare)
Geprägs, StephanWalther-Meißner-Institute for Low Temperature Research (WMI) (författare)
Dietlein, MaximTechnical University of Munich,Walther-Meißner-Institute for Low Temperature Research (WMI) (författare)
Joly, YvesUniversity Grenoble Alpes (författare)
Dai, MinyiUniversity of Wisconsin-Madison (författare)
Hu, JiamianUniversity of Wisconsin-Madison (författare)
Bouchenoire, LaurenceEuropean Synchrotron Radiation Facility,University of Liverpool (författare)
Thompson, Paul B.J.University of Liverpool,European Synchrotron Radiation Facility (författare)
Schülli, Tobias U.European Synchrotron Radiation Facility (författare)
Richard, Marie IngridEuropean Synchrotron Radiation Facility,Aix-Marseille University (författare)
Gross, RudolfWalther-Meißner-Institute for Low Temperature Research (WMI),Technical University of Munich,Munich Center for Quantum Science and Technology (MCQST) (författare)
Carbone, DinaLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)maxl-grc (författare)
Mannix, DannyAarhus University,European Spallation Source ESS ERIC,University Grenoble Alpes(Swepub:lu)slju-dmi (författare)
University of Wisconsin-MadisonWalther-Meißner-Institute for Low Temperature Research (WMI) (creator_code:org_t)

Ingår i:Science Advances: American Association for the Advancement of Science (AAAS)6:402375-2548

Av författaren/redakt...: Evans, Paul G.; Marks, Samuel D.; Geprägs, Stephan; Dietlein, Maxim; Joly, Yves; Dai, Minyi; visa fler...; Hu, Jiamian; Bouchenoire, Lau ...; Thompson, Paul B ...; Schülli, Tobias ...; Richard, Marie I ...; Gross, Rudolf; Carbone, Dina; Mannix, Danny; visa färre...

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