Abstract
A cluster model is used to calculate electron energy-loss fine structures in crystal. The multiple-scattering self-consistent-field method is employed in the calculation. Our theoretical results of N near K-edge energy loss fine structures in hexagonal GaN crystal are in good agreement with the experimental spectra. Future possible experiments in energy-filtered transmission electron microscopy (EFTEM) are discussed and proposed because our theoretical work can provide clear assignments for transmitted electrons with different energy losses.
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References
Egerton, R. F., Electron Energy-Loss Spectroscopy in the Electron Microscope, 2nd ed., New York: Plenum Press, 1996, 312–380.
Zhu, J., Ye, H. Q., Wang, R. H. et a1., High Spatial Resolution Electron Microscopy (in Chinese), Beijing: Science Press, 1987, 301–304.
Sze, K. H., Brion, C. E., Tong, X.M. et al., Inner shell excitaition of SO2 by high-energy electron impact: a comparison with multichannel quantum defect theory, Chem. Phys., 1987, 115: 433–451.
Tong, X. M., Li, J. M., Inner excitation of NO2-near-threshold structure, J. Phys. B, 1989, 22: 1531–1535.
Zhang, P. H., Li, J. M., Theoretical studies of electronic excited states for Na3, Phys. Rev. A, 1996, 54(1):665–669.
Zhang, Y., Zhang, P. H., Li, J. M., Near-threshold structures in inner-shell photoabsorption of N2 and CO, Phys. Rev. A, 1997, 56(3): 1819–1824.
Niu, A. F., Zhang, Y., Zhang, W. H. et a1., Near-threshold structures in inner-sheU photoabsorption process of CH4, NH3, H2O and HE, Phys. Rev. A, 1998, 57(3): 1912–1919.
Zhang, W. H., Zhong, Z. P., Li, J. M., Inner-shell photoabsorption spectra-A theoretical study to determine the,geometry structure of the core excited methane, Science in China, Ser. A, 2000, 43(8): 871–877.
Liang, X. L., Pan, X. C., Li, J. M., Ionization channels of superexcited molecules, Chin. Phys. Len., 1985, 2: 545–547.
Pan, X. C., Liang, X. L., Li, J. M., Quantum defect theory: Theoretical multiple-scattering calculations, Acta Physica Sinica (in Chinese), 1987, 36(4): 426–435.
Liu, L., Li, J. M.. The electronic structure of molecular Rydberg states of diatomic molecules, J. Phys. B, 1991, 24: 1893–1898.
Zhong, Z. P., Zhang, W. H., Xu, K. Z. et a1., A study of optical oscillator strengths in the valence and continum regions (11–19eV) of molecular hydrogen, Acta Physica Sinica (in Chinese), 1999, 48(5): 816–823.
Han, W. Q., Fan, S. S., Li, Q. Q. et a1., Synthesis of gallium nitride nanorods through a carbon nanotube-confined reaction, Science, 1997, 277: 1287–1289.
Li, S. Y., Zhu, J., A1 diffusion in GaN buffer layer during the growth of GaN film, J. Crystal ’Growth, 1999, 203(4): 473–480.
Martin, J. M., Vacher, B., Ponsonnet, L. et al., Chemical bond mapping of carbon by image-spectrum EEIS in the second derivative mode, Ultramicroscopy, 1996, 65(3-4): 229–238.
Rose, H., Prospects for realizing a sub-angstrom sub-eV-resolution EFTEM, Ultramicroscopy, 1999, 78(1-4): 13–25.
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Gao, S., Zhang, W., Li, J. et al. Cluster model calculation of N near K-edge energy-loss fine structures in hexagonal GaN crystal. Sci. China Ser. A-Math. 44, 1602–1607 (2001). https://doi.org/10.1007/BF02880800
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DOI: https://doi.org/10.1007/BF02880800