On the shot noise in dirty metal contacts

Nagaev, K. É.

doi:10.1016/0375-9601(92)90814-3

Cited by 291 publications

(361 citation statements)

References 3 publications

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“…if we consider the noise: the leading order of the noise, the 1/3-suppression of shot noise in a metallic diffusive wire can be found by ensemble averaging a quantummechanical calculation [74] and/or from a classical consideration [75]. If the two procedures would not agree to leading order, it would imply a gigantic quantum effect.…”

Section: Langevin and Master Equation Approach To Noise: Double-bamentioning

confidence: 99%

Shot noise in mesoscopic conductors

2000

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Theoretical and experimental work concerned with dynamic fluctuations has developed into a very active and fascinating subfield of mesoscopic physics. We present a review of this development focusing on shot noise in small electric conductors. Shot noise is a consequence of the quantization of charge. It can be used to obtain information on a system which is not available through conductance measurements. In particular, shot noise experiments can determine the charge and statistics of the quasiparticles relevant for transport, and reveal information on the potential profile and internal energy scales of mesoscopic systems. Shot noise is generally more sensitive to the effects of electron-electron interactions than the average conductance. We present a discussion based on the conceptually transparent scattering approach and on the classical Langevin and BoltzmannLangevin methods; in addition a discussion of results which cannot be obtained by these methods is provided. We conclude the review by pointing out a number of unsolved problems and an outlook on the likely future development of the field.

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Section: Langevin and Master Equation Approach To Noise: Double-bamentioning

confidence: 99%

Shot noise in mesoscopic conductors

2000

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“…Fano factor of 1 3 has been predicted [6,7] and experimentally verified in the case of diffusive systems [25]. Disordered multiwalled carbon nanotubes, on the other hand, have shown a broad spectrum of values [27].…”

Section: Effect Of Disordermentioning

confidence: 83%

“…Consequently, graphene has a similar bimodal distribution of transmission eigenvalues at the Dirac point as there is in diffusive systems [6,7]. In the limit of W /L → ∞, the mode spacing becoming small and one can replace the sum over the channels by an integral over the transverse wave vector component k y to obtain the conductivity and the Fano factor for a sheet with metallic armchair edge:…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Shot noise measurements in graphene

Danneau

Craciun

et al. 2009

Solid State Communications

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a b s t r a c tWe have investigated shot noise at microwave frequencies in wide-aspect-ratio graphene sheets in the temperature range of 4.2-30 K. We find that for our short (L < 300 nm) graphene samples with width over length ratio W /L > 3, the Fano factor F reaches a maximum F ∼ 1/3 at the Dirac point and that it decreases substantially with increasing charge density. Our results agree with the theoretical prediction that electrical transport at the Dirac point is governed by evanescent electronic states.

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“…The prime example of an EPR pair considered here is the singlet/triplet state formed by two electron spins [3], [4]. Its main feature is its non-locality: If we separate the two electrons from each other in real space, their total spin state can still remain entangled.…”

Section: Transport and Noise Of Entangled Electronsmentioning

confidence: 99%

“…la) by which the entanglement of mobile electrons can be detected in noise measurements with a beam splitter [7]. The entangler is assumed to be a device by which we can generate entangled electron states, a specific realization being the doublc-dot systcm [3]. The presence of a beam splitter cnsures that the electrons leaving the entangler have a finite amplitude to be interchanged.…”

Section: Transport and Noise Of Entangled Electronsmentioning

confidence: 99%

Shot-Noise in Non-Degenerate Semiconductors with Energy-Dependent Elastic Scattering

Schomerus

Mishchenko

Beenakker

Statistical and Dynamical Aspects of Mesoscopic Systems

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Abstract. We investigale current fluctuations in non-degenerate Semiconductors, on length scales intermediate between t he elastic and inelastic mean free paths. The shot-noise power P is suppressed below the Poisson value Ppoiasoa -2e7 (afc mean current 7) by the Coulomb repulsion of the carriers. We consider a power-law depenclence of the elastic scattering time τ oc ε α on kinetic energy ε and present an exact solution of the non-linear kinetic equations in the regime of space-charge limited conduction. The ratio P/Ppoisson decreases from 0.38 to 0 in the ränge -£ < a < 1.

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On the shot noise in dirty metal contacts

Cited by 291 publications

References 3 publications

Shot noise in mesoscopic conductors

Shot noise in mesoscopic conductors

Shot noise measurements in graphene

Shot-Noise in Non-Degenerate Semiconductors with Energy-Dependent Elastic Scattering

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