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High resolution X‐ray absorption on metallicity selected C 60 peapods, single‐, and double walled carbon nanotubes
Author(s) -
Kramberger Christian,
Ayala Paola,
Shiozawa Hidetsugu,
Simon Ferenc,
Friedrich Alexander,
Liu Xianjie,
Rümmeli Mark,
Miyata Yasumitsu,
Kataura Hiromichi,
Hoffmann Patrick,
Pichler Thomas
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201100053
Subject(s) - carbon nanotube , materials science , metallicity , absorption spectroscopy , absorption (acoustics) , carbon fibers , metal , resonance (particle physics) , spectral line , electronic structure , atomic physics , nanotechnology , chemistry , computational chemistry , physics , composite material , optics , astrophysics , astronomy , composite number , stars , metallurgy
Abstract We have investigated the C1s core level X‐ray absorption of bulk samples of C 60 ‐peapods and double wall carbon nanotubes (DWNTs) derived from either metallic or semiconducting single‐walled carbon nanotubes (SWNTs). The clear cut separation of the different species unveils their distinct electronic van Hove singularities (VHS). The core level spectra of peapods are a quantitative superpositon of the conduction band of nanotubes and unoccupied molecular orbitals of C 60 . The outer shell metallicity selected DWNTs reveal changes in the π* resonance due to the inner shell VHS.