Near-field magneto-caloritronic nanoscopy on ferromagnetic nanostructures
Authors
Pfitzner, E
Hu, X
Schumacher, HW
Hoehl, A
Cubukcu, M
Liao, J-W
Auffret, S
Heberle, J
Wunderlich, J
Kaestner, B
Publication Date
2018-12Journal Title
AIP Advances
ISSN
2158-3226
Publisher
American Institute of Physics
Volume
8
Number
125329
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Pfitzner, E., Hu, X., Schumacher, H., Hoehl, A., Venkateshvaran, D., Cubukcu, M., Liao, J., et al. (2018). Near-field magneto-caloritronic nanoscopy on ferromagnetic
nanostructures. AIP Advances, 8 (125329) https://doi.org/10.1063/1.5054382
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.
Keywords
cond-mat.mes-hall, cond-mat.mes-hall, cond-mat.mtrl-sci
Sponsorship
This work was supported by the Deutsche Forschungsgemeinschaft through grant HE 2063/5-1 to JH. The work also received funding from the ERC synergy grant No. 610115
Funder references
European Research Council (610115)
Identifiers
External DOI: https://doi.org/10.1063/1.5054382
This record's URL: https://www.repository.cam.ac.uk/handle/1810/290011
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