Vibrational Properties of a Two-Dimensional Silica Kagome Lattice

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Torbjörn Björkman
  • Viera Skakalova
  • Simon Kurasch
  • Ute Kaiser
  • Jannik C. Meyer
  • Jurgen H. Smet
  • Arkady Krasheninnikov

Organisaatiot

  • Slovak University of Technology
  • Ulm University
  • University of Vienna
  • Max Planck Institute for Solid State Research
  • Institute of Ion Beam Physics and Materials Research
  • Åbo Akademi University

Kuvaus

Kagome lattices are structures possessing fascinating magnetic and vibrational properties, but in spite of a large body of theoretical work, experimental realizations and investigations of their dynamics are scarce. Using a combination of Raman spectroscopy and density functional theory calculations, we study the vibrational properties of two-dimensional silica (2D-SiO2), which has a kagome lattice structure. We identify the signatures of crystalline and amorphous 2D-SiO2 structures in Raman spectra and show that, at finite temperatures, the stability of 2D-SiO2 lattice is strongly influenced by phonon-phonon interaction. Our results not only provide insights into the vibrational properties of 2D-SiO2 and kagome lattices in general but also suggest a quick nondestructive method to detect 2D-SiO2.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut10929-10935
Sivumäärä7
JulkaisuACS Nano
Vuosikerta10
Numero12
TilaJulkaistu - 27 joulukuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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