We predict a new electron pair tunneling (PT) resonance in nonlinear transport through quantum dots with positive charging energies exceeding the broadening due to thermal and quantum fluctuations. The PT resonance shows up in the single-electron transport (SET) regime as a peak in the derivative of the nonlinear conductance, d(2)I/dV(2), when the electrochemical potential of one electrode matc...

Spin effects in single-electron tunneling in magnetic junctions J. Martinek, J.Barnaś, G. Micha lek, B.R. Bu lka and A. Fert 1 Institute of Molecular Physics, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland 2 Department of Physics, A. Mickiewicz University, ul. Umultowska 85, 61-614 Poznań, Poland 3 Unite Mixte de Physique CNRS/Thomson, Domaine de Corbeville, 91-404 Or...

Nanoscale resonators that oscillate at high frequencies are useful in many measurement applications. We studied a high-quality mechanical resonator made from a suspended carbon nanotube driven into motion by applying a periodic radio frequency potential using a nearby antenna. Single-electron charge fluctuations created periodic modulations of the mechanical resonance frequency. A quality facto...

We investigate theoretically the dynamics and the charge transport properties of a rod-shaped nanoscale rotor, which is driven by a similar mechanism as the nanomechanical single-electron transistor (NEMSET). We show that a static electric potential gradient can lead to self-excitation of oscillatory or continuous rotational motion. We identify the relevant parameters of the device and study th...

We consider dc-electronic transport through a nanowire suspended between normal- and spin-polarized metal leads in the presence of an external magnetic field. We show that magnetomotive coupling between the electrical current through the nanowire and vibrations of the wire may result in self-excitation of mechanical vibrations. The self-excitation mechanism is based on correlations between the ...

In single-molecule transistors, we observe inelastic cotunneling features that correspond energetically to vibrational excitations of the molecule, as determined by Raman and infrared spectroscopy. This is a form of inelastic electron tunneling spectroscopy of single molecules, with the transistor geometry allowing in situ tuning of the electronic states via a gate electrode. The vibrational fe...

We designed a neuromorphic single-electron oscillator network as an inhibitory neural network model that performs pulse-density modulation (PDM) [1]. The use of single-electron oscillator networks has been proposed for implementing functions of neural networks [2] and reaction-diffusion systems [3]. Single-electron circuits are being studied for use in next-generation LSI devices. We designed a...