Spintronic terahertz emitters: Status and prospects from a materials perspective

C Bull, SM Hewett, R Ji, CH Lin, T Thomson… - Apl Materials, 2021 - pubs.aip.org
Spintronic terahertz (THz) emitters, consisting of ferromagnetic (FM)/non-magnetic (NM) thin
films, have demonstrated remarkable potential for use in THz time-domain spectroscopy and …

Time-domain observation of ballistic orbital-angular-momentum currents with giant relaxation length in tungsten

TS Seifert, D Go, H Hayashi, R Rouzegar… - Nature …, 2023 - nature.com
The emerging field of orbitronics exploits the electron orbital momentum L. Compared to
spin-polarized electrons, L may allow the transfer of magnetic information with considerably …

Broadband spintronic terahertz source with peak electric fields exceeding 1.5 MV/cm

R Rouzegar, AL Chekhov, Y Behovits, BR Serrano… - Physical Review …, 2023 - APS
In this work, we improve the performance of an optically pumped spintronic terahertz emitter
(STE) by a factor of up to 6 in field amplitude through an optimized photonic and thermal …

Ultrafast carrier dynamics in terahertz photoconductors and photomixers: beyond short-carrier-lifetime semiconductors

PK Lu, AJ Fernandez Olvera, D Turan, TS Seifert… - …, 2022 - degruyter.com
Efficient terahertz generation and detection are a key prerequisite for high performance
terahertz systems. Major advancements in realizing efficient terahertz emitters and detectors …

[HTML][HTML] Spintronic sources of ultrashort terahertz electromagnetic pulses

TS Seifert, L Cheng, Z Wei, T Kampfrath, J Qi - Applied Physics Letters, 2022 - pubs.aip.org
Spintronic terahertz emitters are broadband and efficient sources of terahertz radiation,
which emerged at the intersection of ultrafast spintronics and terahertz photonics. They are …

Laser-induced terahertz spin transport in magnetic nanostructures arises from the same force as ultrafast demagnetization

R Rouzegar, L Brandt, L Nádvorník, DA Reiss… - Physical Review B, 2022 - APS
Laser-induced terahertz spin transport (TST) and ultrafast demagnetization (UDM) are
central but so far disconnected phenomena in femtomagnetism and terahertz spintronics …

Ultrafast THz probing of nonlocal orbital current in transverse multilayer metallic heterostructures

S Kumar, S Kumar - Nature Communications, 2023 - nature.com
THz generation from femtosecond photoexcited spintronic heterostructures has become a
versatile tool for investigating ultrafast spin-transport and transient charge-current in a non …

[HTML][HTML] Studying spin–charge conversion using terahertz pulses

L Cheng, Z Li, D Zhao, EEM Chia - Apl Materials, 2021 - pubs.aip.org
Spin–charge conversion is a spin–orbit coupling phenomena where electrical currents can
generate transverse spin currents and vice versa. It is one of the central topics in spintronics …

Cascaded amplification and manipulation of terahertz emission by flexible spintronic heterostructures

Z **, Y Peng, Y Ni, G Wu, B Ji, X Wu… - Laser & Photonics …, 2022 - Wiley Online Library
Spintronic heterostructures consisting of ferromagnetic (FM) and nonmagnetic (NM) have
become increasingly important devices for terahertz (THz) pulse generation, named as …

Efficient orbitronic terahertz emission based on CoPt alloy

Y Liu, Y Xu, A Fert, HY Jaffrès, T Nie, S Eimer… - Advanced …, 2024 - Wiley Online Library
Orbitronic devices operate by manipulating orbitally polarized currents. Recent studies have
shown that these orbital currents can be excited by femtosecond laser pulses in a …