Probing quantum confinement of single-walled carbon nanotubes by resonant soft-x-ray emission spectroscopy

We report the band-structure changes near Fermi level for single-walled carbon nanotubes (SWNTs) with diameters down to 1nm from the study of soft-x-ray absorption and resonant emission spectroscopy. The observed quantum confinement of SWNTs affects both π and σ bands and bandgap through the rehybridization of π and σ orbitals. The significant changes of electronic structure are proved to be a measure for the mean diameter of the macroscopic amounts of SWNTs.

[1]  M. Burghard,et al.  Electronic and vibrational properties of chemically modified single-wall carbon nanotubes , 2005 .

[2]  S. Xie,et al.  Direct Synthesis of a Macroscale Single‐Walled Carbon Nanotube Non‐Woven Material , 2004 .

[3]  P. Lambin.  Electronic structure of carbon nanotubes , 2003 .

[4]  H. Ågren,et al.  Molecular structure of alcohol-water mixtures. , 2003, Physical review letters.

[5]  D. Srivastava,et al.  Generalized Chemical Reactivity of Curved Surfaces: Carbon Nanotubes , 2003 .

[6]  J. Cao,et al.  Curvature and strain effects on electronic properties of single-wall carbon nanotubes , 2003 .

[7]  W. D. de Heer,et al.  Carbon Nanotubes--the Route Toward Applications , 2002, Science.

[8]  R. Smalley,et al.  Oxygen-containing functional groups on single-wall carbon nanotubes: NEXAFS and vibrational spectroscopic studies. , 2001, Journal of the American Chemical Society.

[9]  Kenneth A. Smith,et al.  Gas-phase catalytic growth of single-walled carbon nanotubes from carbon monoxide , 1999 .

[10]  C. Lieber,et al.  Atomic structure and electronic properties of single-walled carbon nanotubes , 1998, Nature.

[11]  C. Kane,et al.  Size, Shape, and Low Energy Electronic Structure of Carbon Nanotubes , 1996, cond-mat/9608146.

[12]  Hudson,et al.  Probing the graphite band structure with resonant soft-x-ray fluorescence. , 1995, Physical review letters.

[13]  T. Warwick,et al.  Performance of a high resolution, high flux density SGM undulator beamline at the ALS (invited) , 1995 .

[14]  Guo,et al.  Angle-resolved soft-x-ray fluorescence and absorption study of graphite. , 1994, Physical review. B, Condensed matter.

[15]  Ma.  X-ray absorption, emission, and resonant inelastic scattering in solids. , 1994, Physical review. B, Condensed matter.

[16]  Riichiro Saito,et al.  Electronic structure of chiral graphene tubules , 1992 .

[17]  Louis J. Terminello,et al.  Unfilled orbitals of C60 and C70 from carbon K-shell X-ray absorption fine structure , 1991 .

[18]  J. Rubensson,et al.  Soft x-ray emission spectroscopy using monochromatized synchrotron radiation (invited) , 1989 .

[19]  Jinghua Guo,et al.  Synchrotron radiation, soft-X-ray spectroscopy and nanomaterials , 2004 .

[20]  Chang Liu,et al.  Semi-continuous synthesis of single-walled carbon nanotubes by a hydrogen arc discharge method , 1999 .