Electron tunneling or flickering resonance?

Biological charge transfer via flickering resonance.

Biological electron-transfer (ET) reactions are typically described in the framework of coherent two-state electron tunneling or multistep hopping. However, these ET reactions may involve multiple redox cofactors in van der Waals contact with each other and with vibronic broadenings on the same scale as the energy gaps among the species. In this regime, fluctuations of the molecular structures ...

Pair tunneling resonance in the single-electron transport regime.

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...

Indirect Electron Tunneling

Indirect electron tunneling is observed in germanium diodes by detecting small perturbations in their I-V characteristics at low temperatures that occur when the applied potential equals the energy of emitted phonons. Frequencies of the observed phonons are calculated to a comparable degree of accuracy (±0.3E12 Hz) with neutron scattering data. Electronic differentiation, used to closely inspec...

Single Electron Tunneling Junctions

This paper and its associated Python programs explore the dynamics of single electron tunneling junction (SETJ) circuits. SETJs can potentially be used as nonlinear circuit elements to implement new paradigms for information processing. I show that an isolated SETJ circuit with a constant bias voltage and sinusoidal pump offset can produce a variety of interesting nonlinear behavior. By adjusti...

Electron tunneling and superconductivity.