Electron beam modification of vanadium dioxide oscillators
| Autor: | Alexander Pergament, Valentin Perminov, Maksim Belyaev, Andrey Velichko, Vadim Putrolaynen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Frequency-shift keying Materials science Strongly Correlated Electrons (cond-mat.str-el) business.industry Oscillation FOS: Physical sciences 02 engineering and technology Disordered Systems and Neural Networks (cond-mat.dis-nn) Condensed Matter - Disordered Systems and Neural Networks 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Oscillatory neural network Condensed Matter - Strongly Correlated Electrons Vanadium dioxide Semiconductor 0103 physical sciences Cathode ray Optoelectronics 0210 nano-technology business Voltage |
| Popis: | The paper presents the results of a study of electron-beam modification (EBM) of VO2-switch I-V curve threshold parameters and the self-oscillation frequency of a circuit containing such a switching device. EBM in vacuum is reversible and the parameters are restored when exposed to air at pressure of 150 Pa. At EBM with a dose of 3 C/cm2, the voltages of switching-on (Vth) and off (Vh), as well as the OFF-state resistance Roff, decrease down to 50% of the initial values, and the oscillation frequency increases by 30% at a dose of 0.7 C/cm2. Features of physics of EBM of an oscillator are outlined considering the contribution of the metal and semiconductor phases of the switching channel. Con-trolled modification allows EBM forming of switches with preset parameters. Also, it might be used in artifi-cial oscillatory neural networks for pattern recognition based on frequency shift keying. |
| Databáze: | OpenAIRE |
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