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6 papers · 2 filters
Enhanced Performance in Epitaxial Graphene FETs with Optimized Channel Morphology
Yu-Ming Lin, Damon B. Farmer, Keith A. Jenkins +7
This letter reports the impact of surface morphology on the carrier transport and RF performance of graphene FETs formed on epitaxial graphene films synthesized on SiC substrates.…
Optical control of one and two hole spins in interacting quantum dots
Alex Greilich, Samuel G. Carter, Danny Kim +2
A single hole spin in a semiconductor quantum dot has emerged as a quantum bit that is potentially superior to an electron spin. A key feature of holes is that they have a greatly…
Graphene valley filter using a line defect
Daniel Gunlycke, Carter T. White
With its two degenerate valleys at the Fermi level, the band structure of graphene provides the opportunity to develop unconventional electronic applications. Herein, we show that…
Electron spin synchronization induced by optical nuclear magnetic resonance feedback
M. M. Glazov, I. A. Yugova, Al. L. Efros
We predict a new physical mechanism explaining the electron spin precession frequency focusing effect observed recently in singly charged quantum dots exposed to a periodic train o…
Low Energy Electron Point Projection Microscopy of Suspended Graphene, the Ultimate "Microscope Slide"
J. Y. Mutus, L. Livadaru, J. T. Robinson +5
Point Projection Microscopy (PPM) is used to image suspended graphene using low-energy electrons (100-200eV). Because of the low energies used, the graphene is neither damaged or c…
Electron-nuclear dynamics in a quantum dot under non-unitary electron control
Edwin Barnes, Sophia E. Economou
We introduce a method for solving the problem of an externally controlled electron spin in a quantum dot interacting with host nuclei via the hyperfine interaction. Our method acco…