217 citations · 1k across the 20 of their papers we have counts for
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Ultrastrong coupling of topologically protected edge and bulk magnetoplasmons without a dedicated cavity
F. Velli, P. Sai, M. Dub +6
In the ultrastrong light-matter coupling regime, the ability to confine the electric field to subwavelength scales and define an electromagnetic mode is essential. This task is typ…
Electrical tunability of terahertz nonlinearity in graphene
Sergey Kovalev, Hassan A. Hafez, Klaas-Jan Tielrooij +15
Graphene is conceivably the most nonlinear optoelectronic material. Its nonlinear optical coefficients in the terahertz (THz) frequency range surpass those of other materials by ma…
Variable-temperature lightwave-driven scanning tunneling microscope with a compact, turn-key terahertz source
Hüseyin Azazoglu, Philip Kapitza, Martin Mittendorff +2
We report on a lightwave-driven scanning tunneling microscope based on a home-built microscope and a compact, commercial, and cost-effective terahertz-generation unit with a repeti…
Strong transient magnetic fields induced by THz-driven plasmons in graphene disks
Jeong Woo Han, Pavlo Sai, Dmytro But +10
Strong circularly polarized excitation opens up the possibility to generate and control effective magnetic fields in solid state systems, e.g., via the optical inverse Faraday effe…
Optical Control of Chiral Charge Pumping in a Topological Weyl Semimetal
M. Mehdi Jadidi, Mehdi Kargarian, Martin Mittendorff +8
Solids with topologically robust electronic states exhibit unusual electronic and optical transport properties that do not exist in other materials. A particularly interesting exam…
Carrier dynamics in graphene: ultrafast many-particle phenomena
Ermin Malic, Torben Winzer, Florian Wendler +10
Graphene is an ideal material to study fundamental Coulomb- and phonon-induced carrier scattering processes. Its remarkable gapless and linear band structure opens up new carrier r…
Slow noncollinear Coulomb scattering in the vicinity of the Dirac point in graphene
J. C. König-Otto, M. Mittendorff, T. Winzer +9
The Coulomb scattering dynamics in graphene in energetic proximity to the Dirac point is investigated by polarization resolved pump-probe spectroscopy and microscopic theory. Colli…
Unconventional double-bended saturation of optical transmission in graphene due to many-particle interactions
Torben Winzer, Martin Mittendorff, Stephan Winnerl +3
We present a joint theory-experiment study on the transmission/absorption saturation after ultrafast pulse excitation in graphene. We reveal an unconventional double-bended saturat…
Tunable Ultrafast Thermal Relaxation in Graphene Measured by Continuous-Wave Photomixing
M. Mehdi Jadidi, Ryan J. Suess, Cheng Tan +9
Hot electron effects in graphene are significant because of graphene's small electronic heat capacity and weak electron-phonon coupling, yet the dynamics and cooling mechanisms of…
Microscopic description of intraband absorption in graphene: the occurrence of transient negative differential transmission
Faris Kadi, Torben Winzer, Ermin Malic +1
We present a microscopic explanation of the controversially discussed transient negative differential transmission observed in degenerate optical pump-probe measurements in graphen…
Anisotropy of excitation and relaxation of photogenerated Dirac electrons in graphene
Martin Mittendorff, Torben Winzer, Ermin Malic +6
We investigate the polarization dependence of the carrier excitation and relaxation in epitaxial multilayer graphene. Degenerate pump-probe experiments with a temporal resolution o…