Terahertz Emission Spectroscopy of Exchange-Biased Spintronic Heterostructures: Single- and Double-Pump Techniques
نویسندگان
چکیده
We show that terahertz (THz) emission spectroscopy is a method to probe the in-plane magnetic state in spintronic heterostructures with exchange bias between constituent antiferromagnetic and ferromagnetic layers. demonstrate intense laser excitation can switch reversibly reset direction of pinning axis arising from technologically relevant tunnel magnetoresistance elements. By applying double-pump THz spectroscopy, we reveal this switching exhibits threshold character pump intensity.
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ژورنال
عنوان ژورنال: Physical review applied
سال: 2023
ISSN: ['2331-7043', '2331-7019']
DOI: https://doi.org/10.1103/physrevapplied.19.064040