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Direct evidence of ...
Direct evidence of terahertz emission arising from anomalous Hall effect
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- Mottamchetty, Venkatesh (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Rani, Parul (författare)
- Uppsala universitet,Materialfysik
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- Brucas, Rimantas (författare)
- Uppsala universitet,Molekylär biomimetik,Fasta tillståndets fysik
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- Rydberg, Anders (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Svedlindh, Peter (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Gupta, Rahul (författare)
- Uppsala universitet,Fasta tillståndets fysik
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(creator_code:org_t)
- Springer Nature, 2023
- 2023
- Engelska.
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Ingår i: Scientific Reports. - : Springer Nature. - 2045-2322. ; 13:1
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A detailed understanding of the different mechanisms being responsible for terahertz (THz) emission in ferromagnetic (FM) materials will aid in designing efficient THz emitters. In this report, we present direct evidence of THz emission from single layer Co0.4Fe0.4B0.2 (CoFeB) FM thin films. The dominant mechanism being responsible for the THz emission is the anomalous Hall effect (AHE), which is an effect of a net backflow current in the FM layer created by the spin polarized current reflected at the interfaces of the FM layer. The THz emission from the AHE-based CoFeB emitter is optimized by varying its thickness, orientation, and pump fluence of the laser beam. Results from electrical transport measurements show that skew scattering of charge carriers is responsible for the THz emission in the CoFeB AHE-based THz emitter.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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- art (ämneskategori)
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