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arXiv · 1304.4715

Topological Raman Band in Carbon Nanohorn

Ken-ichi Sasaki·Yoshiaki Sekine·Kouta Tateno·Hideki Gotoh
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Abstract

Raman spectroscopy has been used in chemistry and physics to investigate the fundamental process involving light and phonons (quantum of lattice vibration). The carbon nanohorn introduces a new subject to Raman spectroscopy, namely topology. We show theoretically that a photo-excited carrier with a non-zero winding number activates a topological $D$ Raman band through the Aharonov-Bohm effect. The topology-induced $D$ Raman band can be distinguished from the ordinary $D$ Raman band for a graphene edge by its peak position.

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Ken-ichi Sasaki, Yoshiaki Sekine, Kouta Tateno, Hideki Gotoh. 2013-04-17. Topological Raman Band in Carbon Nanohorn. https://doi.org/10.1103/physrevlett.111.116801

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