Electron Energy Loss Spectroscopy Measurement of the Optical Gaps on Individual Boron Nitride Single-Walled and Multiwalled Nanotubes

Arenal, R. ; Stephan, O. ; Kociak, M. ; Taverna, D. ; Loiseau, A. ; Colliex, C.

Resumen: Spatially resolved electron energy loss spectroscopy experiments have been performed in an electron microscope on several individual boron nitride (BN) single-, double-, and triple-walled nanotubes, whose diameters and number of shells have been carefully measured. In the low-loss region (from 2 to 50 eV) the spectra have been analyzed within the framework of the continuum dielectric theory, leading to the conclusion of a weak influence of out-of-plane contribution to the dielectric response of the tubes. The gap has been measured to be independent of the nanotubes geometry, and close to the in-plane gap value of hexagonal BN (5.8±0.2¿¿eV).

Idioma: Inglés

DOI: 10.1103/PhysRevLett.95.127601

Año: 2005

Publicado en: PHYSICAL REVIEW LETTERS 95, 12 (2005), 127601 [4 pp.]
ISSN: 0031-9007

Factor impacto JCR: 7.489 (2005)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 4 / 68 = 0.059 (2005) - Q1 - T1

Tipo y forma: Article (Published version)