نتایج جستجو برای: shot noise

تعداد نتایج: 209343  

2004
G. Gomila C. Pennetta L. Reggiani M. Sampietro G. Ferrari G. Bertuccio

We report on a direct experimental evidence of shot noise in a linear macro-scopic resistor. The origin of the shot noise comes from the fluctuation of the total number of charge carriers inside the resistor associated with their diffu-sive motion under the condition that the dielectric relaxation time becomes longer than the dynamic transit time. Present results show that neither potential bar...

2004
G. Gomila C. Pennetta L. Reggiani M. Sampietro G. Ferrari G. Bertuccio

We report on a direct experimental evidence of shot noise in a linear macro-scopic resistor. The origin of the shot noise comes from the fluctuation of the total number of charge carriers inside the resistor associated with their diffu-sive motion under the condition that the dielectric relaxation time becomes longer than the dynamic transit time. Present results show that neither potential bar...

Journal: :Physical review letters 2004
G Gomila C Pennetta L Reggiani M Sampietro G Ferrari G Bertuccio

We report on direct experimental evidence of shot noise in a linear macroscopic resistor. The origin of the shot noise comes from the fluctuation of the total number of charge carriers inside the resistor associated with their diffusive motion under the condition that the dielectric relaxation time becomes longer than the dynamic transit time. The present results show that neither potential bar...

Journal: :Physical review letters 2004
R K Lindell J Delahaye M A Sillanpää T T Heikkilä E B Sonin P J Hakonen

We have investigated the influence of shot noise on the IV curves of a single mesoscopic Josephson junction. We observe a linear enhancement of zero-bias conductance of the Josephson junction with increasing shot-noise power. Moreover, the IV curves become increasingly asymmetric. Our analysis on the asymmetry shows that the Coulomb blockade of Cooper pairs is strongly influenced by the non-Gau...

1997
R. J. Schoelkopf P. J. Burke A. A. Kozhevnikov D. E. Prober M. J. Rooks

Detailed measurements of the voltage, temperature, and frequency dependence of the nonequilibrium current fluctuations for a diffusive mesoscopic conductor are reported. The data confirm predictions that a mesoscopic conductor shorter than the electron-electron inelastic length will display shot noise. Furthermore, the low temperatures (100 mK) and high frequencies (1–20 GHz) used for the measu...

2010
Francesco Perrone Paul Sava

Wave-equation based shot-record migration provides accurate images but is computationally expensive because every shot must be migrated separately. Shot-encoding migration, such as random shot-encoding or plane-wave migration, aims to reduce the computational cost of the imaging process by combining the original data into synthesized common-source gathers. Random shot-encoding migration and pla...

2005
Ya. M. Blanter

This is a brief review of recent activities in the field of current noise intended for newcomers. We first briefly discuss main properties of shot noise in nanostructures, and then turn to recent developments, concentrating on issues related to experimental progress: non-symmetrized cumulants and quantum noise; counting statistics; super-Poissonian noise; current noise and interferometry.

Journal: :Physical review letters 2008
S Ol'khovskaya J Splettstoesser M Moskalets M Büttiker

We investigate the shot noise generated by particle emission from a mesoscopic capacitor into an edge state coupled to another edge state at a quantum point contact (QPC). For a capacitor subject to a periodic voltage the resulting shot noise is proportional to the number of particles (both electrons and holes) emitted during a period. The shot noise is proportional to the driving frequency, ho...

2013
T. Szczepański V. K. Dugaev J. Barnaś J. P. Cascales F. G. Aliev

T. Szczepański, V. K. Dugaev, 2 J. Barnaś∗,3 J. P. Cascales, and F. G. Aliev Department of Physics, Rzeszów University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland Department of Physics and CFIF, Instituto Superior Técnico, TU Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Pol...

1990
MALVIN C. TEICH

We explore the behavior of power-law shot noise, for which the associated impulse response functions assume a decaying power-law form. We obtain expressions for the moments, moment generating functions, amplitude probability density functions, autocorrelation functions, and power spectral densities for a variety of parameters of the process. For certain parameters the power spectral density exh...

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