Energy-efficient spintronic technology holds tremendous potential for the design of next-
generation processors to operate at terahertz frequencies. Femtosecond photoexcitation of …

Terahertz (THz) sources, covering a range from about 0.1 to 10 THz, are key devices for
applying terahertz technology. Spintronics-based THz sources, with the advantages of low …

Orbital current, defined as the orbital character of Bloch states in solids, can travel with larger
coherence length through a broader range of materials than its spin counterpart, facilitating …

Ultrafast generation of spin currents involving antiferromagnets is currently attracting
tremendous interest. Here, we demonstrate broadband THz emission from a [111]-oriented …

Femtosecond laser‐induced photoexcitation of ferromagnet (FM)/heavy metal (HM)
heterostructures has attracted attention by emitting broadband terahertz frequencies. The …

Due to its high sensitivity and because it does not rely on the magneto-optical response,
terahertz (THz) emission spectroscopy has been used as a powerful time-resolved tool for …

Spintronic THz emitters (STE) are efficient THz sources constructed using thin heavy-metal
(HM) and ferromagnetic-metal (FM) layers. To improve the performance of the STE, different …

The broken inversion symmetry at the ferromagnet (FM)/heavy‐metal (HM) interface leads to
spin‐dependent degeneracy of the energy band, forming spin‐polarized surface states. As a …

Collective spin arrangements manifest diverse spin textures, encompassing ferromagnetism,
antiferromagnetism, and chiral vortices. However, mapping these spin textures in ultrathin …

The rise of spintronic terahertz (THz) emitters has captured considerable attention owing to
their potential for delivering high-intensity broadband THz pulses. The quest for enhancing …