Phys. Rev. Lett. 93, 156803 (2004) [4 pages]Time-Resolved Photoimaging of Image-Potential States in Carbon NanotubesSee Also: Publisher's Note Received 2 June 2004; published 5 October 2004 The first experimental evidence for the existence of image-potential states in carbon nanotubes is presented. The observed features constitute a new class of surface image states due to their quantized centrifugal motion. Measurements of binding energies and the temporal evolution of image state electrons were performed using femtosecond time-resolved photoemission. The associated lifetimes are found to be significantly longer than those of n=1 image state on graphite, indicating a substantial difference in electron decay dynamics between tubular and planar graphene sheets. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.156803
DOI:
10.1103/PhysRevLett.93.156803
PACS:
73.21.–b, 73.22.–f, 73.90.+f
See AlsoPublisher's Note: M. Zamkov, N. Woody, B. Shan, H. S. Chakraborty, Z. Chang, U. Thumm, and P. Richard, Publisher's Note: Time-Resolved Photoimaging of Image-Potential States in Carbon Nanotubes [Phys. Rev. Lett. 93, 156803 (2004)], Phys. Rev. Lett. 94, 039903 (2005). |
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