Quantifying the inverse spin-Hall effect in highly doped PEDOT:PSS

Qaid MM, Mahani MR, Sinova J, Schmidt G (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Research American Physical Society

Book Volume: 2

Article Number: 013207

Journal Issue: 1

DOI: 10.1103/PhysRevResearch.2.013207

Abstract

We present a systematic investigation of the inverse spin-Hall effect (ISHE) in the π-conjugated polymer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS). Using a number of reference experiments, we are able to identify and isolate side effects which obscure the small but finite inverse spin-Hall effect in the polymer. We employ a sample geometry in which the contact areas and the area of spin current injection are laterally separated, which allows us to distinguish the ISHE from thermovoltages induced by nonreciprocal magnetostatic spin waves (MSSW) and from the ISHE induced by spin pumping through the polymer into the contacts. With an additional control experiment, we can even quantify the Nernst effect, which also needs to be taken into account. With these results, we can unambiguously show that the ISHE is present in this material, albeit at a level which requires a dedicated sample design and careful consideration of various artifacts.

Involved external institutions

Martin-Luther-Universität Halle-Wittenberg (MLU) DE Germany (DE) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE)

How to cite

APA:

Qaid, M.M., Mahani, M.R., Sinova, J., & Schmidt, G. (2020). Quantifying the inverse spin-Hall effect in highly doped PEDOT:PSS. Physical Review Research, 2(1). https://doi.org/10.1103/PhysRevResearch.2.013207

MLA:

Qaid, Mohammad M., et al. "Quantifying the inverse spin-Hall effect in highly doped PEDOT:PSS." Physical Review Research 2.1 (2020).

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