'工学部/工学系研究科 プレスリリース' blog (64135473799) of hub id 20511701

PRESS RELEASE

Emergence of Negative Capacitance in Multidomain Ferroelectric–Paraelectric Nanocapacitors at Finite Bias

 

Authors

Shusuke Kasamatsu, Satoshi Watanabe, Cheol Seong Hwang, Seungwu Han

 

Abstract

The emergence of negative capacitance in the ultrathin ferroelectric/paraelectric bilayer capacitor under electrical bias is examined using first-principles simulation. An antiferroelectric-like behavior is predicted, and negative capacitance is shown to emerge when the monodomain state becomes stable after bias application. The polydomain–monodomain transition is also shown to be a source of capacitance enhancement.

 

 

 

 

Abstract URL:http://onlinelibrary.wiley.com/doi/10.1002/adma.201502916/abstract