We present a model to describe the asymmetric features of X-ray photoemission spectra from bundles of clean and Li-intercalated single-walled carbon nanotubes due to shake up processes in both metallic and semiconducting bands, with energy gaps below 1 eV. Using the tight binding method, we determine the effect of the suddenly created core hole – in the 1s-state of a carbon atom – on the many electron states of π and π* bands. We compute the energy distributions of many body excitations created at the expense of the photoelectron energy in (10, 10) and (16, 0) tubes, thus, obtaining an merit function for the X-ray photo-peak, resulting from the superposition of a symmetric and an asymmetric components. The latter describes to the average behavior of shake up electrons in tubes of different chirality and changes with the concentration of dopants.

Many body shake up in X-ray photoemission from bundles of lithium-intercalated single-walled carbon nanotubes

SINDONA, Antonio;PLASTINA, Francesco;CUPOLILLO, Anna;FALCONE, Giovanni;
2007-01-01

Abstract

We present a model to describe the asymmetric features of X-ray photoemission spectra from bundles of clean and Li-intercalated single-walled carbon nanotubes due to shake up processes in both metallic and semiconducting bands, with energy gaps below 1 eV. Using the tight binding method, we determine the effect of the suddenly created core hole – in the 1s-state of a carbon atom – on the many electron states of π and π* bands. We compute the energy distributions of many body excitations created at the expense of the photoelectron energy in (10, 10) and (16, 0) tubes, thus, obtaining an merit function for the X-ray photo-peak, resulting from the superposition of a symmetric and an asymmetric components. The latter describes to the average behavior of shake up electrons in tubes of different chirality and changes with the concentration of dopants.
2007
ELECTRONIC-PROPERTIES; NANOTUBES; MANY BODY THEORIES
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/130983
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