Publication Type:Journal Article
Source:Applied Physics Letters, American Institute of Physics Inc., Volume 111, Number 25 (2017)
Keywords:Capacitance, Differential amplification, Differential voltage, Energy transfer, External energy sources, ferroelectricity, negative capacitance, Polarization state
We demonstrate that a ferroelectric can cause a differential amplification without needing such an external energy source. As the ferroelectric switches from one polarization state to the other, a transfer of energy takes place from the ferroelectric to the dielectric, determined by the ratio of their capacitances, which, in turn, leads to the differential amplification. This amplification is very different in nature from conventional inductor-capacitor based circuits where an oscillatory amplification can be observed. The demonstration of differential voltage amplification from completely passive capacitor elements only has fundamental ramifications for next generation electronics. © 2017 Author(s).
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