Emergence of millimeter-wave resonances in self-assembled ferroelectric metamaterials
Authors:
Florian Bergmann,
Peter Meisenheimer,
Aiden Ross,
Marvin Schewe,
Fernando Gómez-Ortiz,
Kaiwen Yang,
Xinyan Li,
Thomas J. Lee,
Pushpendra Gupta,
Liam G. Connolloy,
Tzu-Hsuan Hsu,
Jack Kramer,
Bryan T. Bosworth,
Nicholas R. Jungwirth,
Eric J. Marksz,
Aaron Hagerstrom,
Tomasz Karpisz,
Arundhati Ghosal,
Lane W. Martin,
Yimo Han,
Angela C. Stelson,
Christian J. Long,
Ruochen Lu,
Lucas Caretta,
Javier Junquera
, et al. (4 additional authors not shown)
Abstract:
Resonators are a key component in modern communications and computing. As demand and technological advances push component requirements into the terahertz regime, there is significant research devoted to the search for resonances at these frequencies. While uniform solid-state materials usually do not intrinsically feature resonances in this frequency range, self-assembled periodic arrays of ferro…
▽ More
Resonators are a key component in modern communications and computing. As demand and technological advances push component requirements into the terahertz regime, there is significant research devoted to the search for resonances at these frequencies. While uniform solid-state materials usually do not intrinsically feature resonances in this frequency range, self-assembled periodic arrays of ferroelectric nanodomains may provide an engineering route to design millimeter-wave properties. Here, we utilize prototypical dielectric-ferroelectric SrTiO3/PbTiO3 superlattices to robustly design periodic ferroelectric nano-scale domains. Phase field simulations predict an emergent domain breathing mode in complex polar textures and state-of-the-art millimeter-wave characterization shows evidence for such emergent resonances up to hundreds of GHz. Complex polar textures in these superlattices lead to emergent piezoelectric properties that also result in millimeter-wave resonances, which are predicted by second principles methods and confirmed by direct measurement. The principles investigated in this work suggest a new modality for ferroelectrics in the design of millimeter-wave electronics.
△ Less
Submitted 25 June, 2026;
originally announced June 2026.