English
Related papers

Related papers: Two-loop approximation in the Coulomb blockade pro…

200 papers

We revisit the Coulomb blockade of the tunnel junction with conductance much smaller than $e^2/\hbar$. We study the junction with capacitance $C$, embedded in an Ohmic electromagnetic environment modelled by a series resistance $R$ which…

Mesoscale and Nanoscale Physics · Physics 2022-05-11 A. Mošková , M. Moško

We discuss the suppression of Coulomb charging effects on a small metallic island coupled to an electrode by a tunnel junction. At high temperatures the quantum corrections to the classical charging energy $E_c=e^2/2C$, where $C$ is the…

Condensed Matter · Physics 2015-06-25 Xiaohui Wang , Hermann Grabert

We study the transport through two impurities or ``barriers'' in a one-dimensional quantum wire, taking into account the long-range $\frac1r$ Coulomb interactions. We compute the temperature-dependent conductance $G(T)$ of this system.…

Condensed Matter · Physics 2009-10-28 Hélène Maurey , Thierry Giamarchi

Disordered granular systems, at temperatures where charging effects are important, are studied, by means of an effective medium approximation. The intragrain charging energy leads to insulating behavior at low temperatures, with a well…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 D. P. Arovas , F. Guinea , C. Herrero , P. San Jose

We consider effects of Coulomb interaction in a granular normal metal at not very low temperatures suppressing weak localization effects. In this limit calculations with the initial electron Hamiltonian are reduced to integrations over a…

Disordered Systems and Neural Networks · Physics 2009-11-10 K. B. Efetov , A. Tschersich

The charging of a quantum box connected to a lead by a single-mode point contact is solved for arbitrary temperatures, tunneling amplitudes, and gate voltages, using a variant of Wilson's numerical renormalization group. The charge inside…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Eran Lebanon , Avraham Schiller , Frithjof B. Anders

The operation of the primary Coulomb blockade thermometer (CBT) is based on a measurement of bias voltage dependent conductance of arrays of tunnel junctions between normal metal electrodes. Here we report on a comparison of a CBT with a…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Matthias Meschke , Jost Engert , Dieter Heyer , Jukka P. Pekola

We develop a theory of Coulomb blockade oscillations in transport and thermodynamic properties of a mesoscopic device having multiple charging energy modes. This setup can be realized using a nanoelectronic circuit comprising coupled hybrid…

Mesoscale and Nanoscale Physics · Physics 2025-01-23 D. B. Karki

We have studied the temperature dependent thermopower of gate-defined, lateral quantum dots in the Coulomb blockade regime using an electron heating technique. The line shape of the thermopower oscillations depends strongly on the…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 R. Scheibner , E. G. Novik , T. Borzenko , M. Koenig , D. Reuter , A. D. Wieck , H. Buhmann , L. W. Molenkamp

We investigate coherent transport in Si:MOSFETs with nominal gate lengths 50 to 100nm and various widths at very low temperature. Independent of the geometry, localized states appear when G=e^{2}/h and transport is dominated by resonant…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 M. Sanquer , M. Specht , L. Ghenim , S. Deleonibus , G. Guegan

We study the thermopower of a quantum dot weakly coupled to two reservoirs by tunnel junctions. At low temperatures the transport through the dot is suppressed by charging effects (Coulomb blockade). As a result the thermopower shows an…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 M. Turek , K. A. Matveev

We review the mechanisms of low-temperature electron transport across a quantum dot weakly coupled to two conducting leads. Conduction in this case is controlled by the interaction between electrons. At temperatures moderately lower than…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 L. I. Glazman , M. Pustilnik

We study transport through a quantum dot in the fractional quantum Hall regime with filling factors \nu=2/3 and \nu=5/2, weakly coupled to the leads. We account for both injection of electrons to/from the leads, and quasiparticle…

Mesoscale and Nanoscale Physics · Physics 2015-04-22 Alex Kamenev , Yuval Gefen

We study the effect of the exchange interactions in small superconducting grains near the Coulomb blockade regime. We extend the standard description of the grain in terms of a single collective variable, the charge and its conjugated…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Pablo San-Jose , Carlos P. Herrero , Francisco Guinea , Daniel P. Arovas

We investigate non-equilibrium transport properties of a quantum dot in the Coulomb blockade regime under the condition of negligible inelastic scattering during the dwelling time of the electrons in the dot. Using the quantum kinetic…

Mesoscale and Nanoscale Physics · Physics 2023-11-17 George McArdle , Rose Davies , Igor V. Lerner , Igor V. Yurkevich

The Coulomb blockade in an open quantum dot connected to a bulk lead by a single mode point contact is studied numerically using the path-integral Monte Carlo method. The Coulomb oscillation of the average charge and capacitance of the dot…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Yuji Hamamoto , Takeo Kato

We present an effective action approach for the problem of Coulomb blocking of tunneling. The method is applied to the ``strong coupling'' problem arising near zero bias, where perturbation theory diverges. By a semiclassical argument, we…

Condensed Matter · Physics 2007-05-23 L. S. Levitov , A. V. Shytov

We analyze an interplay between Coulomb blockade and quantum fluctuations in a coherent conductor (with dimensionless conductance $g \gtrsim 1$) attached to an Ohmic shunt. We demonstrate that at T=0 the system can be either an insulator or…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Dmitri S. Golubev , Andrei D. Zaikin

We investigate the suppression of the superconducting transition temperature due to Coulomb repulsion in granular metallic systems at large tunneling conductance between the grains, $g_{T}\gg 1$. We find the correction to the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 I. S. Beloborodov , A. V. Lopatin , V. M. Vinokur

We investigate the effect of Coulomb interactions on the tunneling density of states (DOS) of granular metallic systems at the onset of Coulomb blockade regime in two and three dimensions. Using the renormalization group technique we derive…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 I. S. Beloborodov , A. V. Lopatin , G. Schwiete , V. M. Vinokur