The problem of wave packet tunneling in a potential V (x) = (mω2/2) ( x2 − δxν ) with ν > 2 is considered in the case when the barrier height is much greater than h̄ω and the difference between the average energy of the packet and the oscillator ground state energy h̄ω/2 is sufficiently small. The universal Poisson distribution of the partial tunneling rates from the oscillator energy levels is d...

Interference effects between Berry phase factors in spin tunneling systems have been discussed in recent Letters by Loss, DiVincenzo and Grinstein (LDG) [1] and von Delft and Henley (vDH) [2]. As physical realizations, LDG proposed tunneling of magnetic clusters, and vDH proposed an anisotropic spin hamiltonian and the Heisenberg antiferromagnet on the Kagomé lattice. In these examples, for cer...

A fullerene molecular tip was used to detect electron tunneling from a single porphyrin molecule. Electron tunneling was found to occur locally from an electron-donating moiety of the porphyrin to the fullerene through charge-transfer interaction between them. In addition, electron tunneling within the single fullerene-porphyrin pair exhibited rectifying behavior in which electrons can be drive...

An important issue regarding DNA electrical conductivity is the electron (hole) transfer rate. Experiments have found that this transfer rate involves quantum mechanical tunneling for short distances and thermally activated hopping over large distances. The electron (or hole) tunneling probability through a molecule depends on the length of molecule L, as e(-beta(E)L), where the tunneling betaE...

We report the results of theoretical and UHV STM investigations of low frequency tunneling current noise spectra component (1/f) in vicinity of individual impurity atoms on the InAs (110) surface. It is found that power law exponent of tunneling current noise spectra strongly differs for measurements above flat surface and above impurity atom. Obtained results can be explained by switching ON a...

A INTRODUCTION Advances in epitaxy have permitted the design of semiconductor devices with sufficient precision to make use of quantum mechanical tunneling. The potential advantages of tunneling-based devices consist of high-speed operation and higher functionality inherent in their strongly nonlinear current-voltage characteristics, while the disadvantages include the relative weakness of quan...

We apply the bosonization technique to the problem of tunneling in a Fermi liquid, and present a semiclassical theory of tunneling rates. To test the method, we derive and evaluate an expression for the tunneling current in the problem of two parallel Luttinger liquids. Next we study tunneling between parallel two dimensional Fermi liquids. In the absence of a magnetic field, the conductance I/...

A INTRODUCTION Advances in epitaxy have permitted the design of semiconductor devices with sufficient precision to make use of quantum mechanical tunneling. The potential advantages of tunneling-based devices consist of high-speed operation and higher functionality inherent in their strongly nonlinear current-voltage characteristics, while the disadvantages include the relative weakness of quan...

Our goal is to develop a rectifying antenna (rectenna) applicable to solar spectrum energy harvesting. In particular, we aim to demonstrate viable techniques for converting portion of the solar spectrum not efficiently converted to electric power by current photovoltaic approaches. Novel design guidelines are suggested for rectifying antenna coupled tunneling diodes. We propose a new geometric ...

Since January 2011, IPv4 address space has exhausted and IPv6 is taking up the place as successor. Coexistence of IPv4 and IPv6 bears problem of incompatibility, as IPv6 and IPv4 headers are different from each other, thus, cannot interoperate with each other directly. The IPv6 transitioning techniques are still not mature, causing hindrance in the deployment of IPv6 and development of next gen...