| Zugriffsnummer | 45301 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs |
| Autor(in); Institution |
Janda, T.; Faculty of Mathematics and Physics, Charles University, Prague, CZECH REPUBLIC
Godinho, J.; Institute of Physics, Czech Academy of Sciences, Prague, CZECH REPUBLIC
Ostatnicky, T.; Faculty of Mathematics and Physics, Charles University, Prague, CZECH REPUBLIC
Pfitzner, E.; Freie Universität Berlin, Berlin, GERMANY
Ulrich, Georg; 7.1, Radiometrie mit Synchrotronstrahlung, PTB-Berlin
Hoehl, Arne; 7.1, Radiometrie mit Synchrotronstrahlung, PTB-Berlin
Reimers, S.; School of Physics and Astronomy, University of Nottingham, Nottingham, UNITED KINGDOM
Šobán, Z.; Institute of Physics, Czech Academy of Sciences, Prague, CZECH REPUBLIC
Metzger, T.; Institute of Experimental and Applied Physics, University of Regensburg, Regensburg, GERMANY
Reichlová, H.; Institut für Festkörper- und Materialphysik, Technische Universität Dresden, Dresden, GERMANY
Novák, V.; Institute of Physics, Czech Academy of Sciences, Prague, CZECH REPUBLIC
Campion, R. P.; School of Physics and Astronomy, University of Nottingham, Nottingham, UNITED KINGDOM
Heberle, J.; Freie Universität Berlin, Berlin, GERMANY
Wadley, P.; School of Physics and Astronomy, University of Nottingham, Nottingham, UNITED KINGDOM
Edmonds, K. W.; School of Physics and Astronomy, University of Nottingham, Nottingham, UNITED KINGDOM
Amin, O. J.; School of Physics and Astronomy, University of Nottingham, Nottingham, UNITED KINGDOM
Chauhan, J. S.; School of Physics and Astronomy, University of Nottingham, Nottingham, UNITED KINGDOM
Dhesi, S. S.; Diamond Light Source, Chilton, Didcot, UNITED KINGDOM
Maccherozzi, F.; Diamond Light Source, Chilton, Didcot, UNITED KINGDOM
Otxoa, R. M.; Hitachi Cambridge Laboratory, Cambridge, UNITED KINGDOM
Roy, P. E.; Hitachi Cambridge Laboratory, Cambridge, UNITED KINGDOM
Olejník, K.; Institute of Physics, Czech Academy of Sciences, Prague, CZECH REPUBLIC
Nemec, P.; Faculty of Mathematics and Physics, Charles University, Prague, CZECH REPUBLIC
Jungwirth, T.; Institute of Physics, Czech Academy of Sciences, Prague, CZECH REPUBLIC
Kästner, Bernd; 7.1, Radiometrie mit Synchrotronstrahlung, PTB-Berlin
Wunderlich, J.; Institute of Experimental and Applied Physics, University of Regensburg, Regensburg, GERMANY
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| Quelle/Jahr | Physical Review Materials: 4 (2020), 9, 9 S. |
| Artikelnummer | 094413 |
| Availability | [online-only] |
| ISSN | 2475-9953 |
| DOI | |
| Verlag | Washington, DC: APS |
| Zusammenfassung | Antiferromagnets offer spintronic device characteristics unparalleled in ferromagnets owing to their lack of stray fields, THz spin dynamics, and rich materials landscape. Microscopic imaging of antiferromagnetic domains is one of the key prerequisites for understanding physical principles of the device operation. However, adapting common magnetometry techniques to the dipolar-field-free antiferromagnets has been a major challenge. Here we demonstrate in a collinear antiferromagnet a thermoelectric detection method by combining the magneto-Seebeck effect with local heat gradients generated by scanning far-field or near-field techniques. In a 20-nm epilayer of uniaxial CuMnAs we observe reversible 180◦ switching of the Néel vector via domain wall displacement, controlled by the polarity of the current pulses. We also image polarity-dependent 90◦ switching of the Néel vector in a thicker biaxial film, and domain shattering induced at higher pulse amplitudes. The antiferromagnetic domain maps obtained by our laboratory technique are compared to measurements by the established synchrotron-based technique of x-ray photoemission electron microscopy using x-ray magnetic linear dichroism. |
| Themenbereich der Metrologie | Photometrie und Radiometrie |
Zitierung
Janda, T., Godinho, J., Ostatnicky, T., Pfitzner, E., Ulrich, G., Hoehl, A., Reimers, S., Šobán, Z., Metzger, T., Reichlová, H., Novák, V., Campion, R. P., Heberle, J., Wadley, P., Edmonds, K. W., Amin, O. J., Chauhan, J. S., Dhesi, S. S., Maccherozzi, F., Otxoa, R. M., Roy, P. E., Olejník, K., Nemec, P., Jungwirth, T., Kästner, B., & Wunderlich, J. (2020). Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs. Physical Review Materials, 4(9), 9 S. https://doi.org/10.1103/physrevmaterials.4.094413