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We describe a proposal to probe the quantum tunneling mechanism of an individual ion trapped in a double-well electromagnetic potential. The time-evolution of the probability of fluorescence measurement of the electronic ground state is…

Quantum Physics · Physics 2009-11-07 R. M. Serra , C. J. Villas-Boas , M. H. Y. Moussa

We investigate theoretically a mechanically assisted Kondo effect and electric charge shuttling in nanoelectromechanical single-electron transistor (NEM-SET). It is shown that the mechanical motion of the central island (a small metallic…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. N. Kiselev , K. Kikoin , R. I. Shekhter , V. M. Vinokur

Numerical modeling of correlated single-electron tunneling in uniform 2D arrays of small conducting islands separated by tunnel junctions shows the possiblility of soliton-antisoliton avalanches. Though the time duration of any avalanche,…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Viktor A. Sverdlov , Daniel M. Kaplan , Alexander N. Korotkov , Konstantin K. Likharev

We present transport measurements through an electrostatically defined bilayer graphene double quantum dot in the single electron regime. With the help of a back gate, two split gates and two finger gates we are able to control the number…

Mesoscale and Nanoscale Physics · Physics 2020-04-22 Luca Banszerus , Samuel Möller , Eike Icking , Kenji Watanabe , Takashi Taniguchi , Christian Volk , Christoph Stampfer

A small scale bipolar transistor with polysilicon emitter will, depending on the emitter window size, display suppression of the hole tramsport due to single electron effects. In this paper the resulting base current suppression is computed…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 H. -O. Muller

We have fabricated single-electron transistors from individual metal nanoparticles using a geometry that provides improved coupling between the particle and the gate electrode. This is accomplished by incorporating a nanoparticle into a gap…

Condensed Matter · Physics 2009-11-10 K. I. Bolotin , F. Kuemmeth , A. N. Pasupathy , D. C. Ralph

By a polaronic energy shift, the effective charging energy of molecules can become negative, favoring ground states with even numbers of electrons. Here, we show that charge transport through such molecules near ground-state degeneracies is…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Jens Koch , M. E. Raikh , Felix von Oppen

The Coulomb energy of a small metallic island coupled to an electrode by a tunnel junction is investigated. We employ Monte Carlo simulations to determine the effective charging energy for arbitrary tunneling strength. For small tunneling…

Condensed Matter · Physics 2009-10-30 Xiaohui Wang , Reinhold Egger , Hermann Grabert

We investigate single-electron transport through quantum dots with negative charging energy induced by a polaronic energy shift. For weak dot-lead tunnel couplings, we demonstrate a bipolaronic blockade effect at low biases which suppresses…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Tie-Feng Fang , Shu-Feng Zhang , Chun-Jiang Niu , Qing-feng Sun

We theoretically study the tunnel magnetoresistance(TMR) of ferromagnet / superconductor / ferromagnet single-electron tunneling transistors with a special attention to the parity effect. It is shown that in the plateau region, there is no…

Superconductivity · Physics 2009-11-07 Hiroshi Imamura , Yasuhiro Utsumi , Hiromichi Ebisawa

We observe individual tunnel events of a single electron between a quantum dot and a reservoir, using a nearby quantum point contact (QPC) as a charge meter. The QPC is capacitively coupled to the dot, and the QPC conductance changes by…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 L. M. K. Vandersypen , J. M. Elzerman , R. N. Schouten , L. H. Willems van Beveren , R. Hanson , L. P. Kouwenhoven

We incorporate an Al-AlO_x-Al single-electron transistor as the gate of a narrow (~100 nm) metal-oxide-semiconductor field-effect transistor (MOSFET). Near the MOSFET channel conductance threshold, we observe oscillations in the conductance…

Mesoscale and Nanoscale Physics · Physics 2011-11-10 L. Sun , K. R. Brown , B. E. Kane

Transport properties of ferromagnetic/non-magnetic/ferromagnetic single electron transistors are investigated as a function of external magnetic field, temperature, bias and gate voltage. By designing the magnetic electrodes to have…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Jan Johansson , Mattias Urech , David Haviland , V. Korenivski

We analyze the effect of a gate on the conductance of molecules by separately evaluating the gate-induced polarization and the potential shift of the molecule relative to the leads. The calculations use ab initio density functional theory…

Materials Science · Physics 2007-05-23 San-Huang Ke , Harold U. Baranger , Weitao Yang

The quantum efficiency, which characterizes the quality of information gain against information loss, is an important figure of merit for any realistic quantum detectors in the gradual process of collapsing the state being measured. In this…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Yin Ye , Jing Ping , HuJun Jiao , Shu-Shen Li , Xin-Qi Li

The basis of synchronous manipulation of individual electrons in solid-state devices was laid by the rise of single-electronics about two decades ago. Ultra-small structures in a low temperature environment form an ideal domain of…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Jukka P. Pekola , Juha J. Vartiainen , Mikko Mottonen , Olli-Pentti Saira , Matthias Meschke , Dmitri V. Averin

Carbon-based nanostructures have unparalleled electronic properties. At the same time, using an allotrope of carbon as the contacts can yield better device control and reproducibility. In this work, we simulate a single-electron transistor…

Mesoscale and Nanoscale Physics · Physics 2024-09-27 Washington F. dos Santos , Felippe Amorim , Alexandre Reily Rocha

The nanomechanical single-electron shuttle is a resonant system in which a suspended metallic island oscillates between and impacts at two electrodes. This setup holds promise for one-by-one electron transport and the establishment of an…

Mesoscale and Nanoscale Physics · Physics 2013-02-21 Michael J. Moeckel , Darren R. Southworth , Eva M. Weig , Florian Marquardt

Experiments on the direction-resolved full-counting statistics of single-electron tunneling allow testing the fundamentally important Fluctuation Theorem (FT). At the same time, the FT provides a frame for analyzing such data. Here we…

Mesoscale and Nanoscale Physics · Physics 2009-12-01 Y. Utsumi , D. S. Golubev , M. Marthaler , T. Fujisawa , Gerd Schön

Tunneling of electrons through the barriers in heterostructures devices is investigated by using the unified Transfer Matrix Method. The effect of barrier width on electron transmission coefficients has also been examined for different…

Mesoscale and Nanoscale Physics · Physics 2022-03-28 Jatindranath Gain , Madhumita Dassarkar , Sudakhina Kundu