Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films
| Autor: | Jobu Matsuno, Masaki Uchida, Yoshinori Tokura, Masashi Kawasaki, Yusuke Kozuka, Yuki Ohuchi, Naoki Ogawa |
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| Rok vydání: | 2018 |
| Předmět: |
Science
Gate dielectric General Physics and Astronomy FOS: Physical sciences 02 engineering and technology Electron Topology 01 natural sciences Article General Biochemistry Genetics and Molecular Biology Condensed Matter - Strongly Correlated Electrons Condensed Matter::Materials Science Electric field 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) lcsh:Science 010306 general physics Spin (physics) Physics Condensed Matter - Materials Science Multidisciplinary Condensed Matter - Mesoscale and Nanoscale Physics Spintronics Strongly Correlated Electrons (cond-mat.str-el) Materials Science (cond-mat.mtrl-sci) General Chemistry 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Coupling (physics) Ferromagnetism Magnet lcsh:Q Condensed Matter::Strongly Correlated Electrons 0210 nano-technology |
| Zdroj: | Nature Communications Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018) |
| DOI: | 10.48550/arxiv.1801.06272 |
| Popis: | One of the key technologies in spintronics is to tame spin-orbit coupling (SOC) that links spin and motion of electrons, giving rise to intriguing magneto-transport properties in itinerant magnets. Prominent examples of such SOC-based phenomena are anomalous and topological Hall effects. However, controlling them by electric field has remained unachieved since electric field tends to be screened in itinerant magnets. Here we demonstrate that both anomalous and topological Hall effects can be modulated by electric field in oxide heterostructures consisting of ferromagnetic SrRuO$_{3}$ and nonmagnetic SrIrO$_{3}$. We observed clear electric-field effect only when SrIrO$_{3}$ is inserted between SrRuO$_{3}$ and a gate dielectric. Our results establish that strong SOC of nonmagnetic materials such as SrIrO$_{3}$ is essential in electrical tuning of these Hall effects and possibly other SOC-related phenomena. Comment: 23 pages, 4 figures; revised version has been published in Nat. Commun. 9, 213 (2018) |
| Databáze: | OpenAIRE |
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