Topological Phonons and Weyl Lines in Three Dimensions

Topological Phonons and Weyl Lines in Three Dimensions

Topological mechanics and phononics have recently emerged as an exciting field of study. Here we introduce and study generalizations of the three-dimensional pyrochlore lattice that have topologically protected edge states and Weyl lines in their bulk phonon spectra, which lead to zero surface modes...

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Veröffentlicht in:Physical review letters 2016-08, Vol.117 (6), p.068001-068001, Article 068001
Hauptverfasser: Stenull, Olaf, Kane, C L, Lubensky, T C
Format: Artikel
Sprache:eng
Schlagworte:
Lattice vibration
Lattices
Phonons
Pyrochlores
Spectral lines
Surface waves
Three dimensional
Topology
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Beschreibung
Zusammenfassung:Topological mechanics and phononics have recently emerged as an exciting field of study. Here we introduce and study generalizations of the three-dimensional pyrochlore lattice that have topologically protected edge states and Weyl lines in their bulk phonon spectra, which lead to zero surface modes that flip from one edge to the opposite as a function of surface wave number.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.117.068001