Reference : Optical absorption in small BN and C nanotubes

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a journal
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/17592

Title :	Optical absorption in small BN and C nanotubes
Language :	English
Author, co-author :	Wirtz, Ludger [University of the Basque Country, Department of Material Physics and Donostia International Physics Center,San Sebastián, Spain]
	Olevano, V. [Ecole Polytechnique (France) > Laboratoire des Solides Irradiés]
	Marinopoulos, A. G. [Ecole Polytechnique (France) > Laboratoire des Solides Irradiés]
	Reining, L. [Ecole Polytechnique (France) > Laboratoire des Solides Irradiés]
	Rubio, A. [University of the Basque Country, Department of Material Physics and Donostia International Physics Center,San Sebastián, Spain]
Publication date :	2003
Journal title :	AIP Conference Proceedings
Publisher :	American Institute of Physics
Volume :	685
Special issue title :	MOLECULAR NANOSTRUCTURES
Pages :	406-410
Peer reviewed :	Yes (verified by ORBilu)
On invitation :	Yes
Audience :	International
ISSN :	0094-243X
e-ISSN :	1551-7616
City :	New York
Country :	NY
Event name :	17th International Winterschool/Euroconference on Electronic Properties of Novel Materials
Event date :	8 - 15 March 2003
Abstract :	[en] We present a theoretical study of the optical absorption spectrum of small boron-nitride and carbon nanotubes using time-dependent density-functional theory and the random phase approximation. Both for C and BN tubes, the absorption of light polarized perpendicular to the tube-axis is strongly suppressed due to local field effects. Since BN-tubes are wide band-gap insulators, they only absorb in the ultra-violet energy regime, independently of chirality and diameter. In comparison with the spectra of the single C and BN-sheets, the tubes display additional fine-structure which stems from the (quasi-) one-dimensionality of the tubes and sensitively depends on the chirality and tube diameter. This fine structure can provide additional information for the assignment of tube indices in high resolution optical absorption spectroscopy.
Permalink :	http://hdl.handle.net/10993/17592
Commentary :	0-7354-0154-3 MAR 08-15, 2003 17th International Winterschool/Euroconference on Electronic Properties of Novel Materials Kirchberg AUSTRIA Kuzmany, H Fink, J Mehring, M Roth, S Univ Wein, Inst Mat, Bruker, Analytis Mebtech GmbH, Credit Anstalt BankVerein, Electrovac GmbH, Jobin Yvon GmbH, Nanocyl SA, Omicron Vakuumphys GmbH

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