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Strong, Light, Multifunctional Fibers of Carbon Nanotubes with Ultrahigh Conductivity
High-performance multifunctional carbon nanotube (CNT) fibers that combine the specific strength, stiffness, and thermal conductivity of carbon fibers with the specific electrical Conductivity of metals are reported.
Ultrastrong coupling regimes of light-matter interaction
Recent experiments have demonstrated that light and matter can mix together to an extreme degree, and previously uncharted regimes of light-matter interactions are currently being explored in a
Ultrafast quenching of ferromagnetism in InMnAs induced by intense laser irradiation.
Time-resolved magneto-optical Kerr spectroscopy of ferromagnetic InMnAs reveals two distinct demagnetization processes--fast (<1 ps) and slow (approximately 100 ps) that attribute this fast dynamics to spin heating through p-d exchange interaction between photocarriers and Mn ions.
Plasmonic nature of the terahertz conductivity peak in single-wall carbon nanotubes.
A broad and strong terahertz conductivity peak appears in both types of films, whose behaviors are consistent with the plasmon resonance explanation, firmly ruling out other alternative explanations such as absorption due to curvature-induced gaps.
Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor.
The strongly field-dependent and distinct energy shifts of the 2s, 3s, and 4s excited neutral excitons permits their unambiguous identification and allows for quantitative comparison with leading theoretical models.
Femtosecond demagnetization and hot-hole relaxation in ferromagneticGa1−xMnxAs
We have studied ultrafast photoinduced demagnetization in GaMnAs via two-color time-resolved magneto-optical Kerr spectroscopy. Below-bandgap midinfrared pump pulses strongly excite the valence band,
Exciton diamagnetic shifts and valley Zeeman effects in monolayer WS2 and MoS2 to 65 Tesla
Low-temperature polarized reflection spectroscopy of atomically thin WS2 and MoS2 in high magnetic fields to 65 T is reported, thereby quantifying the valley Zeeman effect in monolayer transition-metal disulphides.
Boron nitride-graphene nanocapacitor and the origins of anomalous size-dependent increase of capacitance.
This work fabricates the thinnest possible nanocapacitor system, essentially consisting of only monolayer materials: h-BN with graphene electrodes, and finds a significant increase in capacitance below a thickness of ∼5 nm, more than 100% of what is predicted by classical electrostatics.
Large Flake Graphene Oxide Fibers with Unconventional 100% Knot Efficiency and Highly Aligned Small Flake Graphene Oxide Fibers
Two types of graphene oxide fibers are spun from high concentration aqueous dopes and show unconventional 100% knot efficiency and stable and continuous drawing yield in good intrinsic alignment.
Collective non-perturbative coupling of 2D electrons with high-quality-factor terahertz cavity photons
Condensed-matter physics meets quantum optics in a study of light–matter interaction in the strong-coupling regime using a two-dimensional electron gas in a high-quality-factor terahertz cavity.