Epitaxial phase of hafnium dioxide for ultrascaled electronics (Articolo in rivista)

Type
Label
  • Epitaxial phase of hafnium dioxide for ultrascaled electronics (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Debernardi, A; Wiemer, C; Fanciulli, M (2007)
    Epitaxial phase of hafnium dioxide for ultrascaled electronics
    in Physical review. B, Condensed matter and materials physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Debernardi, A; Wiemer, C; Fanciulli, M (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 76 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, INFM, MDM Natl Lab, I-20041 Agrate Brianza, Italy (literal)
Titolo
  • Epitaxial phase of hafnium dioxide for ultrascaled electronics (literal)
Abstract
  • We propose a mechanism leading to the local epitaxy observed in HfO2 films grown on Ge(001). Our model is based on state-of-the-art ab initio calculations compared with available experimental data. According to the proposed model, the observed preferential orientation of the monoclinic structure is related to the relaxation of the epitaxially stabilized anatase phase when a critical thickness is reached. In fact, the preferential orientation of the monoclinic structure follows the in-plane axis of the anatase phase, as proven by accurate x-ray scattering data. We predict that the anatase phase, which has no bulk counterpart and has a calculated dielectric constant comparable to the bulk monoclinic one, is almost lattice matched with the Ge(001) substrate. Although the observation of the anatase phase is still missing, its stabilization would allow a control at the atomic level of the HfO2/Ge(001) interface, possibly providing better performances in the next generation complementary-metal-oxide-semiconductor devices. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it