High-speed graphene transistors with a self-aligned nanowire gate
On-chip microwave measurements demonstrate that the self-aligned graphene transistors have a high intrinsic cut-off (transit) frequency of fT = 100–300 GHz, with the extrinsic fT largely limited by parasitic pad capacitance.
Blowing magnetic skyrmion bubbles
A phase diagram for skyrmion formation is determined and the efficient manipulation of these dynamically created skyrMions, including depinning and motion, are revealed, which could lead to progress in sk Kyrmion-based spintronics.
Direct observation of the skyrmion Hall effect
Experiments show that when driven by electric currents, magnetic skyrmions experience transverse motion due to their topological charge — similar to the conventional Hall effect experienced by…
A chemical route to graphene for device applications.
Electric conductivity measurements indicate a 10000-fold increase in conductivity after chemical reduction to graphene, and temperature-dependent conductivity indicates that the graphene-like sheets exhibit semiconducting behavior.
Magnetization switching through giant spin-orbit torque in a magnetically doped topological insulator heterostructure.
The giant SOT and efficient current-induced magnetization switching exhibited by the bilayer heterostructure may lead to innovative spintronics applications such as ultralow power dissipation memory and logic devices.
Significant decrease of the lattice thermal conductivity due to phonon confinement in a free-standing semiconductor quantum well
Lattice thermal conductivity of a quantum well limited by umklapp, impurity, and boundary scattering was investigated theoretically by taking into account dispersion of confined acoustic-phonon…
Non-volatile magnonic logic circuits engineering
A concept of magnetic logic circuits engineering, which takes an advantage of magnetization as a computational state variable and exploits spin waves for information transmission and a library of logic gates consisting of magneto-electric cells and spin wave buses providing 0 or π phase shifts is proposed.
Graphene flash memory.
Graphene flash memory has the potential to exceed the performance of current flash memory technology by utilizing the intrinsic properties of graphene, such as high density of states, high work function, and low dimensionality.
Scale-invariant quantum anomalous Hall effect in magnetic topological insulators beyond the two-dimensional limit.
The extension of the QAHE into the three-dimensional thickness region addresses the universality of this quantum transport phenomenon and motivates the exploration of new QA HE phases with tunable Chern numbers.
Strong Rashba-Edelstein Effect-Induced Spin-Orbit Torques in Monolayer Transition Metal Dichalcogenide/Ferromagnet Bilayers.
The results suggest that the charge-spin conversion in the chemical vapor deposition-grown large-scale monolayer TMDs could potentially lead to high energy efficiency for magnetization reversal and convenient device integration for future spintronics based on two-dimensional materials.