Home > Research > Publications & Outputs > Terahertz Emission Spectroscopy of Exchange-Bia...

Associated organisational unit


Text available via DOI:

View graph of relations

Terahertz Emission Spectroscopy of Exchange-Biased Spintronic Heterostructures: Single- and Double-Pump Techniques

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Article number064040
<mark>Journal publication date</mark>30/06/2023
<mark>Journal</mark>Physical Review Applied
Issue number6
Number of pages9
Publication StatusPublished
Early online date13/06/23
<mark>Original language</mark>English


We show that terahertz (THz) emission spectroscopy is a method to probe the in-plane magnetic state in spintronic heterostructures with exchange bias between the constituent antiferromagnetic and ferromagnetic layers. We demonstrate that the intense laser excitation can switch and reversibly reset the direction of the pinning axis arising from the exchange bias in technologically relevant tunnel magnetoresistance elements. By applying the double-pump THz emission spectroscopy, we reveal that this switching exhibits a threshold character in the pump intensity.