Vibrational Properties of a Two-Dimensional Silica Kagome Lattice

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

doi:10.1021/acsnano.6b05577

Vibrational Properties of a Two-Dimensional Silica Kagome Lattice

Torbjörn Björkman^*
, Viera Skakalova
, Simon Kurasch
, Ute Kaiser
, Jannik C. Meyer
, Jurgen H. Smet
, Arkady V. Krasheninnikov

^*Corresponding author for this work

Department of Applied Physics

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

Research output: Contribution to journal › Article › Scientific › peer-review

22 Citations (Scopus)

454 Downloads (Pure)

Abstract

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.

Original language	English
Pages (from-to)	10929-10935
Number of pages	7
Journal	ACS Nano
Volume	10
Issue number	12
DOIs	https://doi.org/10.1021/acsnano.6b05577
Publication status	Published - 27 Dec 2016
MoE publication type	A1 Journal article-refereed

Keywords

2D materials
2D silicon dioxide
anharmonicity
density functional theory
kagome
Raman spectroscopy

Access to Document

10.1021/acsnano.6b05577

acsnano.6b05577Final published version, 7.7 MBLicence: CC BY

Cite this

@article{71899fa8f9d54d59be9443d603f51a21,

title = "Vibrational Properties of a Two-Dimensional Silica Kagome Lattice",

abstract = "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.",

keywords = "2D materials, 2D silicon dioxide, anharmonicity, density functional theory, kagome, Raman spectroscopy",

author = "Torbj{\"o}rn Bj{\"o}rkman and Viera Skakalova and Simon Kurasch and Ute Kaiser and Meyer, \{Jannik C.\} and Smet, \{Jurgen H.\} and Krasheninnikov, \{Arkady V.\}",

year = "2016",

month = dec,

day = "27",

doi = "10.1021/acsnano.6b05577",

language = "English",

volume = "10",

pages = "10929--10935",

journal = "ACS Nano",

issn = "1936-0851",

publisher = "American Chemical Society",

number = "12",

}

TY - JOUR

T1 - Vibrational Properties of a Two-Dimensional Silica Kagome Lattice

AU - Björkman, Torbjörn

AU - Skakalova, Viera

AU - Kurasch, Simon

AU - Kaiser, Ute

AU - Meyer, Jannik C.

AU - Smet, Jurgen H.

AU - Krasheninnikov, Arkady V.

PY - 2016/12/27

Y1 - 2016/12/27

N2 - 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.

AB - 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.

KW - 2D materials

KW - 2D silicon dioxide

KW - anharmonicity

KW - density functional theory

KW - kagome

KW - Raman spectroscopy

UR - https://www.scopus.com/pages/publications/85008225355

U2 - 10.1021/acsnano.6b05577

DO - 10.1021/acsnano.6b05577

M3 - Article

AN - SCOPUS:85008225355

SN - 1936-0851

VL - 10

SP - 10929

EP - 10935

JO - ACS Nano

JF - ACS Nano

IS - 12

ER -

Vibrational Properties of a Two-Dimensional Silica Kagome Lattice

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this