The Boltzmann distribution of electrons poses a fundamental barrier to lowering energy dissipation in conventional electronics, often termed as Boltzmann Tyranny. Negative capacitance in ferroelectric materials, which stems from the stored energy of phase transition, could provide a solution, but a direct measurement of negative capacitance has so far been elusive. Here we report the observation of negative capacitance in a thin, epitaxial ferroelectric film. When a voltage pulse is applied, the voltage across the ferroelectric capacitor is found to be decreasing with time-in exactly the opposite direction to which voltage for a regular capacitor should change. Analysis of this inductance-like behavior from a capacitor presents an unprecedented insight into the intrinsic energy profile of the ferroelectric material and could pave the way for completely new applications.
@article{arxiv.1409.3273,
title = {Negative Capacitance in a Ferroelectric Capacitor},
author = {Asif Islam Khan and Korok Chatterjee and Brian Wang and Steven Drapcho and Long You and Claudy Serrao and Saidur Rahman Bakaul and Ramamoorthy Ramesh and Sayeef Salahuddin},
journal= {arXiv preprint arXiv:1409.3273},
year = {2014}
}
Comments
The paper has been withdraw by the authors due to a potential conflict