Results 131 to 140 of about 54,131 (291)
Advanced Science, EarlyView.In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Yang Wu +5 more
wiley +1 more source
Gallium Nitride Semiconductor Resonant Tunneling Transistor
Advanced Science, EarlyView.Three‐terminal GaN semiconductor resonant tunneling transistors (RTTs), which comprise an double‐barrier AlN/GaN/AlN resonant tunneling diode integrated with a GaN high‐electron‐mobility transistor (HEMT) through epitaxial growth in series and parallel configuraions, respectively.
Fang Liu +15 more
wiley +1 more source
Research on Direct Detection Method and Performance of Single-photon Counting Terahertz Radar
Leida xuebaoThe conventional terahertz radar suffers from limited operation range for long-distance, noncooperative target detection due to the low transmitter power and atmospheric attenuation effect, both of which pose a hindrance in meeting the requirements of ...
Kang LIU +4 more
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Ultrafast Nonlinear Dynamics of Indium Tin Oxide Nanocrystals Probed via Fieldoscopy
Advanced Science, EarlyView.The ultrafast nonlinear dynamics of indium tin oxide nanocrystals excited with 1 MHz, 10 fs pulses, at their localized surface plasmon frequency, and near their epsilon‐near‐zero wavelength is probed via fieldoscopy. The study demonstrates fluence‐dependent switching behavior, advancing the understanding of high‐speed optical modulation in plasmonic ...
Andreas Herbst +10 more
wiley +1 more source
Design and verify a dual modulated metasurface in terahertz range. [PDF]
Sci Rep, 2020 Zhong M.
europepmc +1 more source
Advanced Science, EarlyView.Thermal transport in smooth‐interface superlattices is studied using the phonon Wigner transport equation, which captures both particle‐like and wave‐like contributions. A minimum in cross‐plane thermal conductivity emerges with increasing period thickness, signaling a crossover from coherent to incoherent phonon transport.
Jin Yang +3 more
wiley +1 more source
Advanced Science, EarlyView.Transition metal and chalcogen substituents are introduced into 2D antiferromagnet, NiPS3, and comprehensive photoluminescence and Raman spectroscopy studies are conducted to investigate how spin orbit entangled exciton and two magnon scattering evolve as functions of substituent concentration.
Cong Tai Trinh +12 more
wiley +1 more source
Generation of Strong Terahertz Pulse with Topologically Tunable Polarization Features
Ultrafast SciencePoincaré terahertz beams, which combine orbital and spin angular momentum, hold substantial promise for a wide range of applications. However, despite recent advancements, generating strong-field vector terahertz radiation remains a challenge.
Jie Cai +7 more
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Characterizing hydrogen bonds in crystalline form of guanidinium salicylate in the terahertz range. [PDF]
RSC Adv, 2020 Song M, Yang F, Su C, Deng B.
europepmc +1 more source
Advanced Science, EarlyView.The interplay between magnetic ordering and crystal electric field (CEF) excitations plays a pivotal role in defining the low‐energy electrodynamics of quantum materials. By probing the temperature‐dependent THz conductivity in a rare‐earth‐based metallic ferromagnet, we uncover a microscopic connection between localized and itinerant electrons ...
Payel Shee +11 more
wiley +1 more source