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A semiclassical theory of the low frequency shot noise in ferromagnet - normal metal systems is formulated. Non-collinear magnetization directions of the ferromagnetic leads, arbitrary junctions and the elastic and inelastic scattering…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Yaroslav Tserkovnyak , Arne Brataas

Current noise provides useful information on correlations important for transport properties of mesoscopic systems. Of particular interest, both experimentally and theoretically, are heterostructures of normal metals and superconductors. We…

Superconductivity · Physics 2017-08-23 W. Belzig , J. Boerlin , C. Bruder , Yu. V. Nazarov

We investigate the effect of electron-phonon inelastic scattering on shot noise in nanoscale junctions in the regime of quasi-ballistic transport. We predict that when the local temperature of the junction is larger than its lowest…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Yu-Chang Chen , Massimiliano Di Ventra

We study the influence of inelastic processes on shot noise and the Fano factor for a one-dimensional double-barrier structure, where resonant tunneling takes place between two terminals. Most studies to date have found, by means of various…

Mesoscale and Nanoscale Physics · Physics 2023-01-04 I. V. Krainov , A. P. Dmitriev , N. S. Averkiev

We report first-principles calculations of shot noise properties of parallel carbon wires in the regime in which the interwire distance is much smaller than the inelastic mean free path. We find that, with increasing interwire distance, the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Johan Lagerqvist , Yu-Chang Chen , Massimiliano Di Ventra

We study sequential tunneling through a metallic nanoparticle close to the Stoner instability coupled to parallely magnetized electrodes. Increasing the bias voltage successively opens transport channels associated with excitations of the…

Mesoscale and Nanoscale Physics · Physics 2012-04-20 Björn Sothmann , Jürgen König , Yuval Gefen

We demonstrate that current-current correlations (in particular the shot noise), can be used to study the intrinsic superconductivity in a slightly doped Weyl semi-metal. The systems studied is an N-WS tunneling junction where the left…

Superconductivity · Physics 2016-09-21 A. Golub

We study a shot noise of a wide channel gated high-frequency transistor at temperature of 4.2K near pinch-off. In this regime, a transition from the metallic to the insulating state is expected to occur, accompanied by the increase of the…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 V. S. Khrapai , D. V. Shovkun

Recently we have developed a theory of Keldysh formalism for mesoscopic systems. The resulting nonequilibrium Kubo formula for differential conductance makes it possible to propose the new formula of shot noise $S_h$, and thus to study shot…

Mesoscale and Nanoscale Physics · Physics 2008-07-31 Tatsuya Fujii

A recent theory is reviewed for the shot noise of coherent radiation propagating through a random medium. The Fano factor P/I (the ratio of the noise power and the mean transmitted current) is related to the scattering matrix of the medium.…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 C. W. J. Beenakker , M. Patra

We present a theoretical investigation of shot-noise properties in nondegenerate elastic diffusive conductors. Both Monte Carlo simulations and analytical approaches are used. Two new phenomena are found: (i) the display of enhanced shot…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 G. Gomila , T. Gonzalez , L. Reggiani

A theory of non-equilibrium (``shot'') noise and high frequency conductance in diffusive mesoscopic conductors with screening is presented. Detailed results are obtained for two simple geometries, for both large and short electron-electron…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Y. Naveh , D. V. Averin , K. K. Likharev

The shot noise in long diffusive SNS contacts is calculated using the semiclassical approach. At low frequencies and for purely elastic scattering, the voltage dependence of the noise is of the form S_I = (4\Delta + 2eV)/3R. The…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 K. E. Nagaev

We show that shot noise in a resonant tunneling diode biased in the negative differential resistance regions of the I-V characteristic is enhanced with respect to ``full'' shot noise. We provide experimental results showing a Fano factor up…

Strongly Correlated Electrons · Physics 2009-10-30 G. Iannaccone , G. Lombardi , M. Macucci , B. Pellegrini

The low-frequency shot noise properties of two electrostatically coupled semiconductor quantum dot states which are connected to emitter/collector contacts are studied. A master equation approach is used to analyze the bias voltage…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 G. Kiesslich , A. Wacker , E. Schoell

We extend the theory of shot noise in coherent metals to shot noise in strange metals without quasiparticle excitations. This requires a generalization of the Boltzmann equation with a noise source to distribution functions which depend…

Strongly Correlated Electrons · Physics 2023-11-17 Alexander Nikolaenko , Subir Sachdev , Aavishkar A. Patel

The shot noise of spin polarized electrons is shown to be generically dependent upon spin-flip processes. Such a situation represents perhaps the simplest instance where the two-particle character of current fluctuations out of equilibrium…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. Lamacraft

We perform a numerical investigation of the effect of the disorder associated with randomly located impurities on shot noise in mesoscopic cavities. We show that such a disorder becomes dominant in determining the noise behavior when the…

Mesoscale and Nanoscale Physics · Physics 2013-08-16 Paolo Marconcini , Massimo Totaro , Giovanni Basso , Massimo Macucci

We report shot noise measurements for a quantum dot formed in an InAs nanowire suspended between superconducting electrodes. We find a clear alternation for the shot noise value in the Coulomb blockade regime between even and odd electron…

Mesoscale and Nanoscale Physics · Physics 2021-07-30 Keiko Takase , Yasuhiro Utsumi , Yamato Ashikawa , Guoqiang Zhang , Kouta Tateno , Yuma Okazaki , Satoshi Sasaki

We have investigated shot noise in multiterminal, diffusive multiwalled carbon nanotubes (MWNTs) at 4.2 K over the frequency f = 600 - 850 MHz. Quantitative comparison of our data to semiclassical theory, based on non-equilibrium…

Mesoscale and Nanoscale Physics · Physics 2010-06-30 T. Tsuneta , P. Virtanen , F. Wu , T. Wang , T. T. Heikkilä , P. J. Hakonen
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