The two classes of low-energy spectra in finite carbon nanotubes

URN zum Zitieren dieses Dokuments:: urn:nbn:de:bvb:355-epub-323882
DOI zum Zitieren dieses Dokuments:: 10.5283/epub.32388

Marganska, Magdalena ; Chudzinski, Piotr ; Grifoni, Milena

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Veröffentlichungsdatum dieses Volltextes: 28 Aug 2015 08:39

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Zusammenfassung

We study the spectra of finite-length carbon nanotubes (CNTs) of arbitrary chirality. They divide into two classes, which arise because of different rotational symmetries of the low-energy eigenstates. In one of them (the zigzag class), the spinless spectrum is doubly degenerate and the two states can be assigned to different values of the valley degree of freedom. In the other (armchair class), ...