publication . Preprint . Article . Other literature type . 2018

Ferroelectric Negative Capacitance Domain Dynamics

Michael J. Hoffmann; Asif Islam Khan; Claudy Rayan Serrao; Zhongyuan Lu; Sayeef Salahuddin; Milan Pešić; Stefan Slesazeck; Uwe Schroeder; Thomas Mikolajick;
Open Access English
  • Published: 14 May 2018
Transient negative capacitance effects in epitaxial ferroelectric Pb(Zr$_{0.2}$Ti$_{0.8}$)O$_3$ capacitors are investigated with a focus on the dynamical switching behavior governed by domain nucleation and growth. Voltage pulses are applied to a series connection of the ferroelectric capacitor and a resistor to directly measure the ferroelectric negative capacitance during switching. A time-dependent Ginzburg-Landau approach is used to investigate the underlying domain dynamics. The transient negative capacitance is shown to originate from reverse domain nucleation and unrestricted domain growth. However, with the onset of domain coalescence, the capacitance be...
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free text keywords: Condensed Matter - Mesoscale and Nanoscale Physics, General Physics and Astronomy, Capacitor, law.invention, law, Domain wall (magnetism), Ferroelectricity, Resistor, Materials science, Ferroelectric capacitor, Series and parallel circuits, Negative impedance converter, Capacitance, Condensed matter physics
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