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We investigate a hybrid structure consisting of $20\pm4$ implanted $^{31}$P atoms close to a gate-induced silicon single electron transistor (SiSET). In this configuration, the SiSET is extremely sensitive to the charge state of the nearby…

We perform in-situ detection of individual electrons pumped through a single-electron turnstile based on ultrasmall normal metal - insulator - superconductor tunnel junctions. In our setup, limited by the detector bandwidth, at low…

Mesoscale and Nanoscale Physics · Physics 2015-12-02 J. T. Peltonen , V. F. Maisi , S. Singh , E. Mannila , J. P. Pekola

We have investigated the static, charge-trapping properties of a hybrid superconductor---normal metal electron turnstile embedded into a high-ohmic environment. The device includes a local Cr resistor on one side of the turnstile, and a…

Superconductivity · Physics 2015-05-20 Sergey V Lotkhov , Olli-Pentti Saira , Jukka P Pekola , Alexander B Zorin

We report on measurements on a sample consisting of two nominally identical single-electron transistors the islands of which are coupled capacitively. One transistor at a time is operated as electron box. The remaining transistor is used as…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. Schaefer , B. Limbach , P. v. Stein , C. Wallisser

We report an experimental observation of the backaction of a Single Electron Transistor (SET) measuring the Coulomb staircase of a single electron box. As current flows through the SET, the charge state of the SET island fluctuates. These…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 B. A. Turek , K. W. Lehnert , A. Clerk , D. Gunnarsson , K. Bladh , P. Delsing , R. J. Schoelkopf

We have measured individual tunneling events and Coulomb step shapes in single-electron boxes with opaque superconductor-normal metal tunnel junctions. We observe anomalous broadening of the Coulomb step with decreasing temperature in a…

Mesoscale and Nanoscale Physics · Physics 2011-06-13 O. -P. Saira , M. Mottonen , V. F. Maisi , J. P. Pekola

We study charging effects and tunneling in the single electron box. Tunneling mixes different charge states and in the nonperturbative regime the charge in the island may be strongly screened. When charge states are nearly degenerate the…

Condensed Matter · Physics 2009-10-22 G. Falci , J. Heins , Gerd Schoen , Gergely T. Zimanyi

We study electron transport through a small metallic island in the perturbative regime. Using a recently developed diagrammatic technique, we calculate the occupation of the island as well as the conductance through the transistor in forth…

Mesoscale and Nanoscale Physics · Physics 2009-10-30 Jürgen König , Herbert Schoeller , Gerd Schön

The influence of the phases of tunneling matrix elements on the rate of the elastic co--tunneling at an ultrasmall normal--conducting double--junction is studied in a simple quantum--hole approach at zero temperature. The results are…

Condensed Matter · Physics 2009-10-22 Heinz-Olaf Muller , Andreas Hadicke , Wolfram Krech

We evaluate the detector nonideality (and energy sensitivity) of a normal-state single-electron transistor (SET) in the cotunneling regime in a two-charge-state approximation. For small conductances and at zero temperature, the SET's…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 Alec Maassen van den Brink

We study electron transport through a small metallic island in the perturbative regime. Using a diagrammatic real-time technique, we calculate the occupation of the island as well as the conductance through the transistor at arbitrary…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Jürgen König , Herbert Schoeller , Gerd Schön

Usual paradigm in the theory of electron transport is related to the fact that the dielectric permittivity of the insulator is assumed to be constant, no time dispersion. We take into account the "slow" polarization dynamics of the…

Strongly Correlated Electrons · Physics 2015-10-28 S. A. Fedorov , N. M. Chtchelkatchev , O. G. Udalov , I. S. Beloborodov

We study strong electron tunneling in the single-electron box, a small metallic island coupled to an electrode by a tunnel junction, by means of quantum Monte Carlo simulations. We obtain results, at arbitrary tunneling strength, for the…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Carlos P. Herrero , Gerd Schon , Andrei D. Zaikin

We investigate the properties of a hybrid single electron transistor, involving a small superconducting island sandwiched between normal metal leads, which is driven by dc plus ac voltages. In order to describe its properties we derive from…

We present numerical results on electron tunneling in a single-electron box at low temperature. The effective action of this device is equivalent to the Hamiltonian of a classical XY spin chain with long ranged interactions. Using an…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Philipp Werner , Matthias Troyer

We report on a new type of single-electron transistor (SET) comprising two highly resistive Cr thin-film strips (~ 1um long) connecting a 1 um-long Al island to two Al outer electrodes. These resistors replace small-area oxide tunnel…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 V. A. Krupenin , A. B. Zorin , D. E. Presnov , M. N. Savvateev , J. Niemeyer

Quantum fluctuations of the charge in the single electron box are investigated. Based on a diagrammatic expansion we calculate the average island charge number and the effective charging energy in third order in the tunneling conductance.…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Georg Goeppert , Hermann Grabert

We study strong tunneling (i.e. transmission $h/e^2R_T \gg 1$) in the single-electron box with many transverse modes at zero temperature. We develop a new renormalization group method which includes all charge states and requires no initial…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Jürgen König , Herbert Schoeller

In this Letter, we present a theoretical analysis to single-electron pumping operation in a large range of driving frequencies through the time-dependent tunneling barriers controlled by external gate voltages. We show that the…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 Chuan-Yu Lin , Wei-Min Zhang

We present an experimental study of hybrid turnstiles with high charging energies in comparison to the superconducting gap. The device is modeled with the sequential tunneling approximation. The backtunneling effect is shown to limit the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 A. Kemppinen , S. Kafanov , Yu. A. Pashkin , J. S. Tsai , D. V. Averin , J. P. Pekola
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