Trade-off in perpendicular electric field control using negatively biased emissive end-electrodes

Purely electric-field-driven perpendicular magnetization reversal.

If achieved, magnetization reversal purely with an electric field has the potential to revolutionize the spintronic devices that currently utilize power-dissipating currents. However, all existing proposals involve the use of a magnetic field. Here we use phase-field simulations to study the piezoelectric and magnetoelectric responses in a three-dimensional multiferroic nanostructure consisting...

Terahertz emission from electric field singularities in biased semiconductors.

We use electric field singularities in biased metal semiconductor microstructures to enhance the generation of terahertz (THz) radiation from semiconductors. We find that, regardless of the mechanism that is responsible for enhanced THz emission near the anode, singular electric fields near sharp anode features will enhance this emission by as much as an order of magnitude. We show scanning THz...

Electric Field Distribution in a Reverse-Biased p-n Junction

This problem is motivated by the use of crystals as detectors of energetic charged particles that pass completely through the crystal, leaving a trail of electron-ion pairs. Although the crystals are nominally insulators, the electrons so liberated are in the conduction band and can be separated from the ion by a DC electric field, resulting in a signal pulse on the electrodes plated onto oppos...

Electric-field control of magnetization in biased semiconductor quantum wires and point contacts

Electric and thermal field effects in tissue around radiofrequency electrodes.

OBJECTIVE A study is carried out of the spatial distribution and time dependence of electric and thermal fields in the tissue around a radiofrequency (RF) electrode used in pain therapy. Finite-element calculation of the fields is performed, and results are compared with ex vivo tissue data. Field predictions are made for continuous and for pulsed RF applications. DESIGN A special RF cannula ...