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Electrical contacts between nano-engineered systems are expected to constitute the basic building blocks of future nano-scale electronics. However, the accurate characterization and understanding of electrical contacts at the nano-scale is…

介观与纳米尺度物理 · 物理学 2012-04-03 Christophe Brun , Konrad H. Müller , I-Po Hong , François Patthey , Christian Flindt , Wolf-Dieter Schneider

The charge localization of single electrons on mesoscopic metallic islands leads to a suppression of the electrical current, known as the Coulomb blockade. When this correction is small, it enables primary electron thermometry, as it was…

介观与纳米尺度物理 · 物理学 2021-07-23 Nikolai Yurttagül , Matthew Sarsby , Attila Geresdi

We measure the electron escape-rate from surface-acoustic-wave dynamic quantum dots (QDs) through a tunnel barrier. Rate-equations are used to extract the tunnelling rates, which change by an order of magnitude with tunnel-barrier gate…

介观与纳米尺度物理 · 物理学 2009-11-13 M. R. Astley , M. Kataoka , C. J. B. Ford , C. H. W. Barnes , D. Anderson , G. A. C. Jones , I. Farrer , D. A. Ritchie , M. Pepper

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…

凝聚态物理 · 物理学 2007-05-23 L. S. Levitov , A. V. Shytov

A wide survey has been performed, concerning atomic binding energies and ionization energies used by well- known general purpose Monte Carlo codes and a few specialized electromagnetic models for track structure simulation. Validation…

计算物理 · 物理学 2010-12-09 H. Seo , M. G. Pia , L. Quintieri , M. Begalli , P. Saracco , C. H. Kim

Motivated by recent tunneling experiments in the parallel wire geometry, we calculate results for momentum resolved tunneling into a short one-dimensional wire, containing a small number of electrons. We derive some general theorems about…

介观与纳米尺度物理 · 物理学 2007-05-23 Gregory A. Fiete , Jiang Qian , Yaroslav Tserkovnyak , Bertrand I. Halperin

We present a calculation of the grand canonical partition function of a serial metallic island system by the imaginary-time path integral formalism. To this purpose, all electronic excitations in the lead and island electrodes are described…

介观与纳米尺度物理 · 物理学 2022-01-26 Pipat Harata , Prathan Srivilai

We have developed a detailed experimental study of a single-electron transistor in a strong tunneling regime. Although weakened by strong charge fluctuations, Coulomb effects were found to persist in all samples including one with the…

凝聚态物理 · 物理学 2009-10-31 D. Chouvaev , L. S. Kuzmin , D. S. Golubev , A. D. Zaikin

We report measurements on single-electron pumps, consisting of two metallic islands formed by three tunnel junctions in series. We focus on the linear-response conductance as a function of gate voltage and temperature of three samples with…

介观与纳米尺度物理 · 物理学 2009-11-10 B. Limbach , P. vom Stein , C. Wallisser , R. Schaefer

Small superconducting islands can exhibit charge quantization, where Coulomb interactions compete with Cooper pairing. Using scanning tunneling spectroscopy, we probe this interplay by measuring the charging energy ($E_C$) and the pairing…

We evaluate the full statistics of the current via a Coulomb island that is strongly coupled to the leads. This strong coupling weakens Coulomb interaction. We show that in this case the effects of the interaction can be incorporated into…

介观与纳米尺度物理 · 物理学 2009-11-10 D. A. Bagrets , Yu. V. Nazarov

Three terminal tunnelling experiments on quantum dots in the Coulomb blockade regime allow a quantitative determination of the coupling strength of individual quantum states to the leads. Exploiting this insight we have observed independent…

介观与纳米尺度物理 · 物理学 2009-11-10 R. Leturcq , D. Graf , T. Ihn , K. Ensslin , D. D. Driscoll , A. C. Gossard

We describe a variational procedure for calculating the energy of an electron gas in which the long-range Coulomb interaction is truncated by the screening effect of a nearby metallic gate. We use this procedure to compute the quantum…

介观与纳米尺度物理 · 物理学 2010-11-15 Brian Skinner , M. M. Fogler

We consider correlation-assisted tunnel ionization of a small molecule by an intense low-frequency laser pulse. In this mechanism, the departing electron excites the state of the ion via a Coulomb interaction. We show that the angular…

原子物理 · 物理学 2014-04-25 Emilio Pisanty , Misha Ivanov

Analytical expression for the Coulomb potential in the presence of superstrong magnetic field is derived. Structure of hydrogen levels originating from LLL is analyzed.

高能物理 - 唯象学 · 物理学 2022-03-02 M. I. Vysotsky

Charging of a clean two-dimensional island is studied in the regime of small concentration of electrons when they form the Wigner crystal. Two forms of electron-electron interaction potential are studied: the pure Coulomb interaction and…

凝聚态物理 · 物理学 2009-10-30 A. A. Koulakov , B. I. Shklovskii

The influence of Coulomb interaction on the electron transport through molecular wires is studied in the regime of incoherent tunneling. In the limit of strong Coulomb repulsion, the current for spinless electrons is determined. It is shown…

化学物理 · 物理学 2007-05-23 Jörg Lehmann , Gert-Ludwig Ingold , Peter Hänggi

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…

介观与纳米尺度物理 · 物理学 2009-10-30 Jürgen König , Herbert Schoeller , Gerd Schön

The linear conductance of the a small metallic tunnel junction embedded in an electromagnetic environment of arbitrary impedance is determined in the semiclassical limit. Electron tunneling is treated beyond the orthodox theory of Coulomb…

介观与纳米尺度物理 · 物理学 2007-05-23 Georg Goeppert , Hermann Grabert

It was shown that tunneling current flowing through a system with Coulomb correlations leads to charge redistribution between the different localized states. Simple model consisting of two electron levels have been analyzed by means of…

其他凝聚态物理 · 物理学 2012-07-02 P. I. Arseyev , N. S. Maslova , V. N. Mantsevich