Hou, D;
Qiu, Z;
Iguchi, R;
Sato, K;
Vehstedt, EK;
Uchida, K;
Bauer, GEW;
(2016)
Observation of temperature-gradient-induced magnetization.
Nature Communications
, 7
, Article 12265. 10.1038/ncomms12265.
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Abstract
Applying magnetic fields has been the method of choice to magnetize non-magnetic materials, but they are difficult to focus. The magneto-electric effect and voltage-induced magnetization generate magnetization by applied electric fields, but only in special compounds or heterostructures. Here we demonstrate that a simple metal such as gold can be magnetized by a temperature gradient or magnetic resonance when in contact with a magnetic insulator by observing an anomalous Hall-like effect, which directly proves the breakdown of time-reversal symmetry. Such Hall measurements give experimental access to the spectral spin Hall conductance of the host metal, which is closely related to other spin caloritronics phenomena such as the spin Nernst effect and serves as a reference for theoretical calculation.
| Type: | Article |
|---|---|
| Title: | Observation of temperature-gradient-induced magnetization |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/ncomms12265 |
| Publisher version: | https://doi.org/10.1038/ncomms12265 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
| Keywords: | Magnetic properties and materials, Spintronics, Thermodynamics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10092218 |
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