Presentation
15 March 2023 Magnetoresistive phenomena revealed by time-domain terahertz spectroscopy
Lukas Nadvornik
Author Affiliations +
Abstract
Quadratic magnetoresistive phenomena, such as the anisotropic and spin-Hall magnetoresistance, are powerful and versatile probes of magnetic order in ferro- and antiferromagnetic spintronic research. In this contribution, we study the ultrafast dynamics of these effects using the broadband time-domain terahertz (THz) spectroscopy and electrical detection, covering frequency responses ranging from DC to tens of THz. Owing to the wide spectral range, we can reveal the extrinsic (electron-scattering dependent) and a sizable intrinsic (scattering independent) contributions to the anisotropic magnetoresistance in common ferromagnets and identify specific ultrafast regimes of coupling of the spin accumulation to magnetic moments in spin-Hall magnetoresistive bilayers.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lukas Nadvornik "Magnetoresistive phenomena revealed by time-domain terahertz spectroscopy", Proc. SPIE PC12419, Ultrafast Phenomena and Nanophotonics XXVII, (15 March 2023); https://doi.org/10.1117/12.2651465
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KEYWORDS
Terahertz spectroscopy

Magnetism

Terahertz radiation

Scattering

Spectroscopy

Spintronics

Ultrafast laser spectroscopy

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