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 …

[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 …

Terahertz emission in quantum materials

S Yang, L Cheng, J Qi - Ultrafast Science, 2023 - spj.science.org
The study of the interaction between terahertz (THz) radiation and quantum materials has
been an active area of research due to its potential for understanding fundamental physics …

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 …

Electronic transport induced ultrafast magnetization switching

J Gorchon, M Hehn, G Malinowski, S Mangin - Journal of Magnetism and …, 2022 - Elsevier
The control of magnetization, and thus spin, at the shortest timescale, is of prime importance
for the development of faster and energy efficient spintronic devices for memory, storage and …

Accelerating ultrafast magnetization reversal by non-local spin transfer

Q Remy, J Hohlfeld, M Vergès, Y Le Guen… - Nature …, 2023 - nature.com
When exciting a magnetic material with a femtosecond laser pulse, the amplitude of
magnetization is no longer constant and can decrease within a time scale comparable to the …

Efficient ultrafast field-driven spin current generation for spintronic terahertz frequency conversion

I Ilyakov, A Brataas, TVAG de Oliveira… - Nature …, 2023 - nature.com
Efficient generation and control of spin currents launched by terahertz (THz) radiation with
subsequent ultrafast spin-to-charge conversion is the current challenge for the next …

Distinguishing surface and bulk electromagnetism via their dynamics in an intrinsic magnetic topological insulator

KD Nguyen, W Lee, J Dang, T Wu, G Berruto, C Yan… - Science …, 2024 - science.org
The indirect exchange interaction between local magnetic moments via surface electrons
has been long predicted to bolster the surface ferromagnetism in magnetic topological …

THz induced giant spin and valley currents

S Sharma, P Elliott, S Shallcross - Science Advances, 2023 - science.org
Spin and valley indices represent the key quantum labels of quasi-particles in a wide class
of two-dimensional materials and form the foundational elements of the fields of spintronics …

Giant and controllable valley currents in graphene by double pumped thz light

S Sharma, D Gill, S Shallcross - Nano Letters, 2023 - ACS Publications
The field of valleytronics considers the creation and manipulation of “valley states”, charge
excitations characterized by a particular value of the crystal momentum in the Brillouin zone …