Several aspects of microwave breakdown in resonators are discussed in this paper. Approximate analytical criteria are formulated for the critical microwave breakdown field in some illustrative model geometries, which clearly brings out the main physical properties of microwave-induced breakdown in the presence of inhomogeneous electric fields. The analytical results are verified by comparisons ...

It is shown that in the SU(2) Yang Mills Higgs theory with broken gauge symmetry a flux tube solution filled with a color longitudinal electric field exists. The origin of the gauge symmetry breakdown for this case is discussed.

RF breakdown is one of the major factors determining performance of high power rf components and rf sources. RF breakdown limits working power and produces irreversible surface damage. The breakdown limit depends on the rf circuit, structure geometry, and rf frequency. It is also a function of the input power, pulse width, and surface electric and magnetic fields. In this paper we discuss multi...

The paper considers abnormal operation modes of an electric drive power subsystem with permanent magnet synchronous motor (PMSM), such as breakdown and burnout of IGBT-transistor in the three-phase inverter. The effect of these faults on the spectrum and form of the currents in the windings of the synchronous motor was studied. Heuristic algorithms based on the form features of the winding curr...

A low effective oxide thickness of 1.45 nm was achieved in HfAlO films deposited by an electron beam gun evaporator on unheated p-Si substrate. A reduction of the leakage current density from 1 · 10 4 to 4.5 · 10 7 A/cm, at an electric field 3 MV/cm, with annealing temperature and a breakdown electric field of 10 MV/cm were demonstrated for ultra thin films. 2004 Elsevier Ltd. All rights reserved.

Quantum transport properties of electron systems driven by strong electric fields are studied by mapping the Landau-Zener transition dynamics to a quantum walk on a semi-infinite one-dimensional lattice with a reflecting boundary, where the sites correspond to energy levels and the boundary the ground state. Quantum interference induces a distribution localized around the ground state, and a de...

The quantum anomalous Hall effect (QAHE) realizes dissipationless longitudinal resistivity and quantized resistance without the need of an external magnetic field. However, when reducing device dimensions or increasing current density, abrupt breakdown state occurs with a relatively small critical current, limiting applications QAHE. We investigate mechanism this by studying multi-terminal devi...

[1] By modifying the avalanche mode of runaway breakdown to include positive feedback from gammarays and positrons, it is found that enormous bursts of energetic radiation can be produced in strong electric fields in air, with peak fluxes up to one billion times greater than from conventional models. These bursts generate so many runaway electrons that the electric field is very rapidly dischar...

Control of the fundamental absorption edge of a quantum dot with an applied electric field has been limited by the breakdown fields of the solid-state material surrounding the dot. However, much larger fields can be applied at the interface of two immiscible electrolytic solutions (ITIES) in an electrochemical cell. These electric fields also localize the quantum dots at the ITIES. Our analysis...