Electron tunneling is investigated for the alkanethiol self-assembled monolayers (SAMs) formed using three different device structures spanning from the nanometer to the micrometer scale. The measured current–voltage characteristics for the alkanethiol SAMs can be explained by the classical metal–insulator–metal tunneling model and the tunneling current exhibits overall exponential trend on the...

Controlled chemical reaction of single trans-2-butene molecules on the Pd(110) surface was realized by dosing tunneling electrons from the tip of a scanning tunneling microscope at 4.7 K. The reaction product was identified as a 1,3-butadiene molecule by inelastic electron tunneling spectroscopy. Threshold voltage for the reaction is approximately 365 mV, which coincides with the vibrational ex...

Charge transport across tunneling junctions of n-doped Ge has been investigated experimentally and theoretically. Using tunneling spectroscopy we were able to observe the density of states and the effect of the electron-electron interaction on the excitation spectrum of samples, in which hopping is the transport mechanism close to equilibrium. To analyze the data of the measurements we derive a...

A numerical simulation of spin-dependent quantum transport for a spin field effect transistor is implemented in a widely used simulator, nanoMOS. This method includes the effect of both spin scattering in the channel and the tunneling barrier between the source/drain and the channel. Accounting for these factors permits setting more realistic performance limits for the transistor, especially th...

Single electron tunneling into small superconducting islands is sensitive to the gap energy of the excitations created in the process and, hence, depends on the parity of the electron number in the island. We study these effects by analyzing the kinetics of the system. Since the interplay of Coulomb blockade and parity effects leads to a blocking of single electron tunneling, higher order tunne...

We study the edge transport properties of paired fractional quantum Hall (FQH) states— the Haldane-Rezayi (HR), Moore-Read (Pfaffian) and Halperin (331) states. A table of exponents is given for the tunneling between the edges of paired FQH states in gated 2D structures and the tunneling into the edge of FQH states from a normal Fermi liquid (N). It is found that HR, Pfaffian and 331 states hav...

We calculate the tunneling conductance in the framework of the spin polaron model, which is an effective model for the t−J model, in the limit where at least short-range antiferromagnetic correlations exist. We show that both in the normal state and in the superconducting state the asymmetry of tunneling conductance is present. This fact is the implication of the particle–hole asymmetry of the ...

In this note, we calculate the dissipation due to the tunneling of quasiparticles using the environmental P (E) theory[1] to properly account for coupling to the qubit from the charge transfer. We will first calculate the damping rate for a inductor-capacitor resonator using environmental theory; the prediction for phase qubits, for example, will be similar since qubit and harmonic oscillator m...

Landau-Zener (LZ) tunneling can occur with a certain probability when crossing energy levels of a quantum two-level system are swept across the minimum energy separation. Here we present experimental evidence of quantum interference effects in solid-state LZ tunneling. We used a Cooper-pair box qubit where the LZ tunneling occurs at the charge degeneracy. By employing a weak nondemolition monit...