ABSTRACT Thermoelectric effects in spintronics1 are gathering increasing attention as a means of managing heat in nanoscale structures and of controlling spin information by using heat

flow2,3,4,5,6,7,8,9,10. Thermal magnons (spin-wave quanta) are expected to play a major role2,5,11,12; however, little is known about the underlying physical mechanisms involved. The reason

is the lack of information about magnon interactions and of reliable methods to obtain it, in particular for electrical conductors because of the intricate influence of electrons12,13. Here,

we demonstrate a conceptually new device that enables us to gather information on magnon–electron scattering and magnon-drag effects. The device resembles a thermopile14 formed by a large

effect on magnon drag following a variation of magnon and phonon populations. This information is crucial to understand the physics of electron–magnon interactions, magnon dynamics and

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Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS SPIN HALL-INDUCED BILINEAR MAGNETOELECTRIC RESISTANCE Article 12 September 2024 MAGNETO-OPTICAL DESIGN OF ANOMALOUS NERNST

THERMOPILE Article Open access 27 May 2021 IMPRINTING AND DRIVING ELECTRONIC ORBITAL MAGNETISM USING MAGNONS Article Open access 07 December 2020 REFERENCES * Johnson, M. & Silsbee, R.

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Scholar  Download references ACKNOWLEDGEMENTS We acknowledge discussions with I. M. Miron and J. Van de Vondel. We thank S. Alvarado, A. Bachtold, O. Fesenko and P. Gambardella for a

critical reading of the manuscript. This research was supported by the Spanish Ministerio de Ciencia e Innovación, MICINN (MAT2010-18065) and by the European Community’s Seventh Framework

Programme (FP7/2007-2013) under grant agreement NANOFUNCTION no 257375. AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Catalan Institute of Nanotechnology (ICN-CIN2), Barcelona E-08193, Spain

Marius V. Costache, German Bridoux, Ingmar Neumann & Sergio O. Valenzuela * Universitat Autònoma de Barcelona (UAB), Barcelona E-08193, Spain Ingmar Neumann & Sergio O. Valenzuela *

Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona E-08010, Spain Sergio O. Valenzuela Authors * Marius V. Costache View author publications You can also search for this

author inPubMed Google Scholar * German Bridoux View author publications You can also search for this author inPubMed Google Scholar * Ingmar Neumann View author publications You can also

search for this author inPubMed Google Scholar * Sergio O. Valenzuela View author publications You can also search for this author inPubMed Google Scholar CONTRIBUTIONS M.V.C. and S.O.V.

planned the measurements, analysed the data and wrote the paper. M.V.C. fabricated the samples and made the measurements. I.N. contributed to the sample design and data analysis. G.B.

provided sample fabrication and data-analysis support. S.O.V. supervised the experiment. All authors discussed the results and commented on the manuscript. CORRESPONDING AUTHORS

Correspondence to Marius V. Costache or Sergio O. Valenzuela. ETHICS DECLARATIONS COMPETING INTERESTS The authors declare no competing financial interests. SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION Supplementary Information (PDF 644 kb) RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Costache, M., Bridoux, G., Neumann, I.

_et al._ Magnon-drag thermopile. _Nature Mater_ 11, 199–202 (2012). https://doi.org/10.1038/nmat3201 Download citation * Received: 07 September 2011 * Accepted: 16 November 2011 * Published:

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