2017/09/11 by Sou-Chi Chang, Uygar E. Avci, Dmitri E. Nikonov +2 · 92 citations
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Capacitance #Capacitor #Chemistry #Computer science #Condensed matter physics #Dielectric #Differential capacitance #Electrical engineering #Electrode #Engineering #Ferroelectric and Negative Capacitance Devices #Ferroelectric and Piezoelectric Materials #Ferroelectric capacitor #Ferroelectricity #Materials science #Negative impedance converter #Optoelectronics #Physics #Polarization (electrochemistry) #Quantum mechanics #Resistor #Semiconductor materials and devices #Transient (computer programming) #Transient response #Transistor #Voltage #physics.app-ph
paper · pdf · doi:10.1103/physrevapplied.9.014010
published in Physical Review Applied 9(1) (American Physical Society) · 5 pages, 11 figures
arxiv created 2017/09/11 · openalex created_date 2017/09/25 · openalex publication_date 2018/01/10 · arxiv updated 2018/01/17 · openalex updated_date 2026/08/05
The unusual transient negative differential capacitance (NC) of a resistor--ferroelectric (FE) capacitor circuit is of keen interest for use in next-generation transistors, but a clear physical picture and theoretical framework are needed to interpret experiments. The authors show both numerically and analytically that transient NC comes from the mismatch of free charge and polarization in the capacitor during polarization switching, and a procedure to experimentally determine the viscosity coefficient in Landau theory is provided. These results should have real impact on metrology and device physics involving the NC effect.