Pfitzner, E;
Hu, X;
Schumacher, HW;
Hoehl, A;
Venkateshvaran, D;
Cubukcu, M;
Liao, J-W;
... Kaestner, B; + view all
(2018)
Near-field magneto-caloritronic nanoscopy on ferromagnetic nanostructures.
AIP Advances
, 8
(12)
10.1063/1.5054382.
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Abstract
Near-field optical microscopy by means of infrared photocurrent mapping has rapidly developed in recent years. In this letter we introduce a near-field induced contrast mechanism arising when a conducting surface, exhibiting a magnetic moment, is exposed to a nanoscale heat source. The magneto-caloritronic response of the sample to near-field excitation of a localized thermal gradient leads to a contrast determined by the local state of magnetization. By comparing the measured electric response of a magnetic reference sample with numerical simulations we derive an estimate of the field enhancement and the corresponding temperature profile induced on the sample surface.
| Type: | Article |
|---|---|
| Title: | Near-field magneto-caloritronic nanoscopy on ferromagnetic nanostructures |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.5054382 |
| Publisher version: | https://doi.org/10.1063/1.5054382 |
| Language: | English |
| Additional information: | Copyright © Author(s) 2018. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/ licenses/by/4.0/). |
| Keywords: | Magnetism, Scanning probe microscopy, Infrared radiation, Electromotive force, Thermoelectric effects |
| 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 > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10066417 |
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