Differential voltage amplification from ferroelectric negative capacitance

Asif I. Khan*, Michael Hoffmann, Korok Chatterjee, Zhongyuan Lu, Ruijuan Xu, Claudy Serrao, Samuel Smith, Lane W. Martin, Chen-Ming Hu, Ramamoorthy Ramesh, Sayeef Salahuddin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


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.

Original languageEnglish
Article number253501
JournalApplied Physics Letters
Issue number25
StatePublished - 18 Dec 2017

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