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Electric power transfer in spin-pumping experiments

Rogdakis, K; Alfert, N; Srivastava, A; Robinson, JWA; Blamire, MG; Cohen, LF; Kurebayashi, H; (2018) Electric power transfer in spin-pumping experiments. Applied Physics Express , 11 (1) , Article 013004. 10.7567/APEX.11.013004. Green open access

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Abstract

Spin pumping has become an established method for generating voltages using magnetic dynamics. The standard detection method of spin pumping is based on open-circuit voltage measurement. In this study, we demonstrate that it is also possible to measure the associated electric current by using macroscopic closed circuitry. Using variable load resistors connected in series to the sample, we quantified the charge currents and associated electric power dissipation with respect to the load resistance. Through basic circuit analysis, we can describe spin-pumping cells as a non-ideal voltage source or an equivalent current source with an internal resistor.

Type: Article
Title: Electric power transfer in spin-pumping experiments
Open access status: An open access version is available from UCL Discovery
DOI: 10.7567/APEX.11.013004
Publisher version: https://doi.org/10.7567/APEX.11.013004
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL > Provost and Vice Provost Offices
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: http://discovery.ucl.ac.uk/id/eprint/1574819
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