Luo Song-Lin and Wei Ya-Dong 2009 Chinese Phys. Lett. 26 117202 doi:10.1088/0256-307X/26/11/117202
Properties of Graphene Based Parametric Pump
Luo Song-Lin and Wei Ya-Dong
Show affiliationsCONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES
The adiabatic parametric electron pump of the infinite zigzag graphene ribbons and the infinite armchair graphene ribbons is investigated by the tight binding method. The pumping signals are added by two gates around the ribbons. It is shown that the dc current can be pumped out by cyclically varying the two gate voltages and the pumped current strongly depends on the driving frequency, the pumping amplitude and the phase difference of the gate voltages. The pumped current is mediated by the graphene energy levels and its peaks occur around the energies where transmission coefficients and density of states are large. The pump current may give one peak or two opposite peaks corresponding to each transmission peak or transmission pair peaks. The height and width of the current peaks increase with the amplitude of the pumping driving voltages. The pumped current is antisymmetric about the phase difference 
= π and for small pumping amplitude the pumped current is a sinusoidal function of the phase difference. Some graphene ribbons, although with different widths, have very similar contours of the transmission coefficients and give the same pumped current figures.
- PACS
- Subjects
- Dates
-
Issue 11 (November 2009)
Received 6 August 2009
-
Properties of Graphene Based Parametric Pump
Luo Song-Lin and Wei Ya-Dong 2009 Chinese Phys. Lett. 26 117202
-
Electroluminescence from single nanowires by tunnel injection: an experimental study
Mariano A Zimmler et al 2007 Nanotechnology 18 235205
-
Star products: a group-theoretical point of view
Paolo Aniello 2009 J. Phys. A: Math. Theor. 42 475210
-
Establishing the structure of GeS2 at high pressures and temperatures: a combined approach using x-ray and neutron diffraction
Anita Zeidler et al 2009 J. Phys.: Condens. Matter 21 474217
-
XAFS Debye-Waller factors for deformed hemes and metal substituted hemes
N Dimakis et al 2009 J. Phys.: Conf. Ser. 190 012198
-
Depth profiling of magnetic and atomic structures of ultrathin films by depth-resolved XMCD and XAFS techniques with a sub-nm depth resolution
K Amemiya et al 2009 J. Phys.: Conf. Ser. 190 012108
-
Structure of spinel at high temperature using in-situ XANES study at the Al and Mg K-edge
D de Ligny et al 2009 J. Phys.: Conf. Ser. 190 012178
-
Ab-initio CI calculations for 3d transition metal L2,3 X-ray absorption spectra of TiCl4 and VOCl3
Hidekazu Ikeno et al 2009 J. Phys.: Conf. Ser. 190 012005
-
Relativistic electron-ion recombination in the presence of an intense laser field
C Müller et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 221001
-
Improved methods and uncertainty analysis in the calibration of the spring constant of an atomic force microscope cantilever using static experimental methods
Charles A Clifford and Martin P Seah 2009 Meas. Sci. Technol. 20 125501
Users also read
What's this?- Grain Size Effect on Electrical Conductivity and Giant Magnetoresistance of Bulk Magnetic Polycrystals
- Design of a High-Nonlinearity Single-Mode Holey Fiber with Flattened Dispersion around 800 nm
- Electro-oxidation of Formic Acid on Carbon Supported Edge-Truncated Cubic Platinum Nanoparticles Catalysts
Related review articles
What's this?- Growth mechanisms for doped clusters
- Computational studies of doped nanostructures
- Dewetting-mediated pattern formation in nanoparticle assemblies