Two-dimensional Dirac plasmon-polaritons in graphene, 3D topological insulator and hybrid systems

C In, UJ Kim, H Choi - Light: Science & Applications, 2022 - nature.com
Collective oscillations of massless particles in two-dimensional (2D) Dirac materials offer an
innovative route toward implementing atomically thin devices based on low-energy …

[HTML][HTML] The physics of terahertz negative photoconductivity in low-dimensional materials

S Kar, J Lake, SO Adeyemo, TS Santra… - Materials Today Physics, 2022 - Elsevier
Enhancement of conductivity is the common photoresponse when incident photons
temporarily generate free carries after photoexcitation in a solid-crystalline-material. In sharp …

Bi2Se3-Functionalized Metasurfaces for Ultrafast All-Optical Switching and Efficient Modulation of Terahertz Waves

Y Hu, M Tong, X Cheng, J Zhang, H Hao, J You… - ACS …, 2021 - ACS Publications
Because of the wealth of fascinating physical phenomena observed in topological insulators
(TIs), their exciting properties have been intensively investigated for electronic and …

Ultrafast Auger process in few-layer PtSe 2

HJ Shin, S Bae, S Sim - Nanoscale, 2020 - pubs.rsc.org
Enhanced many-body interactions due to strong Coulomb interactions and quantum
confinement are one of the most prominent features of two-dimensional systems. The Auger …

Surface terminations control charge transfer from bulk to surface states in topological insulators

K Fukumoto, S Lee, S Adachi, Y Suzuki, K Kusakabe… - Scientific Reports, 2024 - nature.com
Topological insulators (TI) hold significant potential for various electronic and optoelectronic
devices that rely on the Dirac surface state (DSS), including spintronic and thermoelectric …

Ultrafast interfacial carrier dynamics and persistent topological surface states of Bi2Se3 in heterojunctions with VSe2

TG Park, JH Jeon, SH Chun, S Lee… - Communications …, 2022 - nature.com
Vanadium diselenide (VSe2) has recently been highlighted as an efficient 2D electrode
owing to its extra-high conductivity, thickness controllability, and van der Waals contact …

Broadband and high‐sensitivity time‐resolved THz system using grating‐assisted tilted‐pulse‐front phase matching

W Cui, KM Awan, R Huber, K Dolgaleva… - Advanced Optical …, 2022 - Wiley Online Library
A broadband and sensitive time‐resolved terahertz (THz) configuration relying on
noncollinear optical interactions is presented. This noncollinear scheme enables a higher …

Terahertz signatures of ultrafast Dirac fermion relaxation at the surface of topological insulators

S Kovalev, KJ Tielrooij, JC Deinert, I Ilyakov… - npj Quantum …, 2021 - nature.com
Topologically protected surface states present rich physics and promising spintronic,
optoelectronic, and photonic applications that require a proper understanding of their …

Anisotropic excitons in 2D rhenium dichalcogenides: a mini-review

S Bae, S Sim - Journal of the Korean Physical Society, 2022 - Springer
Layered rhenium dichalcogenides, represented by ReS2 and ReSe2, have recently
emerged as rising-star two-dimensional (2D) materials with a distorted 1 T structure. Due to …

[HTML][HTML] Terahertz spectral analysis: An in-depth exploration of spectroscopy approaches for ultrafast dynamics

J Jang, J Park, HJ Shin - Current Applied Physics, 2024 - Elsevier
Terahertz (THz) radiation, located on the electromagnetic spectrum between microwaves
and infrared, gives significant interest due to its remarkable potential in various applications …