Temperature dependence of magnetoresistance in GdFeCo/Pt heterostructure
| Autor: | Hiroki Yoshikawa, Teruo Ono, Takayuki Tono, Arata Tsukamoto, Takahiro Moriyama, Kab-Jin Kim, Takaya Okuno, Sanghoon Kim |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Magnetoresistance General Engineering General Physics and Astronomy Heterojunction Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences Moderate temperature Amorphous solid Condensed Matter::Materials Science Magnetization Ferrimagnetism Hall effect 0103 physical sciences Condensed Matter::Strongly Correlated Electrons 010306 general physics Spin (physics) |
| Zdroj: | Applied Physics Express. 9:073001 |
| ISSN: | 1882-0786 1882-0778 |
| DOI: | 10.7567/apex.9.073001 |
| Popis: | The temperature dependence of magnetoresistance is investigated in ferrimagnetic GdFeCo/Pt heterostructures. An anomalous Hall effect (AHE) shows a monotonic behavior in temperature even across the magnetization compensation temperature T M, implying that the FeCo moment is responsible for the magnetotransport properties. An anisotropic magnetoresistance (AMR) exhibits a steep increase at low temperatures, which we ascribe to the contribution of a weak antilocalization in an amorphous GdFeCo layer. A spin Hall magnetoresistance (SMR) is found to exist in ferrimagnet/Pt systems and shows a moderate temperature dependence, in contrast to the SMR in YIG/Pt where a significant temperature dependence was observed. These results provide a basic understanding of the magnetotransport in amorphous ferrimagnets/heavy metal heterostructures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|