Title: Electrodynamics of ferroelectric films with negative capacitance

Journal Article · · Physical Review B
 [1];  [2];  [3]
  1. Univ. of Picardie, Amiens (France). Lab. of Condensed Matter Physics; Landau Inst. for Theoretical Physics, Chernogolovka (Russia)
  2. Univ. of Picardie, Amiens (France). Lab. of Condensed Matter Physics
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division

We construct a theory of the electrodynamic response of ferroelectric thin films containing periodic domain textures (PDTs) with 180° polarization-oriented domains. Here, we demonstrate that a depolarization field induced by PDTs gives rise to the negative capacitance of the ferroelectric film. We derive frequency-dependent dielectric permittivity related to the PDT dynamics across the entire frequency range. We find the resonance mode of domain oscillations in the terahertz (THz) spectral band and the singular points in the phase of the reflected THz beam that are intimately related to the negative capacitance. Our findings provide a material platform for the THz negative-capacitance-based optics of ferroelectric films and for epsilon-near-zero plasmonic THz metamaterials.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
European Commission (EC); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1466322
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 2 Vol. 98; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Modeling of Negative Capacitance in Ferroelectric Thin Films journal June 2019
Ferroelectric negative capacitance journal March 2019
Harnessing ferroelectric domains for negative capacitance journal February 2019