… initially, while the terahertz PC changes into negative value in a … negative terahertz PC
response shows strongly pump fluence dependence. We assign the unusual negative terahertz …

… reduces hot carrier mobility by polaron generation in type II Dirac semi-metal PtTe 2 . …
In this review, positive terahertz photoconductivity refers to the positive values of Δσ 1 . The …

… linear dispersion band structure in a 3D Dirac and/or Weyl semimetal, like Cd 3 As 2 and
MoTe 2 . As a result, the free carriers’ absorption of THz pulses is enhanced by hot electrons …

… of terahertz waves using an ultrathin film (100 nm, λ/3000) of Cd 3 As 2 are experimentally
demonstrated through active tailoring of the photoconductivity… [ 47, 48 ] By tuning the negative …

… Up to now, our results indicate the feasibility and advantages of the Cd 3 As 2 -based THz
detectors, with controllable behavior of either photoconduction or self-powered operation by …

… 2D Xenes and Weyl/Dirac semimetals as emerging materials for THz applications. … a negative
transient conductivity was reported in Dirac materials like graphene from optical pump-THz …

… film within THz frequency. After photoexcitation, the maximum THz photoconductivity (PC) is
… transmission) in Cd 3 As 2 , rather than negative PC observed in highly doped graphene. (ii) …

… under THz radiation when the device is biased at different positive/negative voltages, which
… After confirming the photoconduction for type-II Dirac semimetal Ir 1–x Pt x Te 2 , we turn to …

… weight is much larger than that in scattering rate due to the constraint of linear dispersion
band structure in a 3D Weyl semimetal, like MoTe2. As a result, the free carriers’ absorption of …

… For low-energy incident light in the IR and THz bands that … act directly on nodal line semimetal
FGT with a specialized … to the recently reported Dirac and Weyl semimetal photodetectors.…