A positron study of the Fermi surface of TmGa3

Details A positron study of the Fermi surface of TmGa3 A positron study of the Fermi surface of TmGa3

2002-02-09

arxiv.org/abs/cond-mat/0202158v2

Mat. Sci. Forum 363-365, 573 (2001)

Physics

Condensed Matter

Materials Science

Scientific paper

For a single crystal of TmGa3, two-dimensional angular correlation of positron annihilation radiation spectra were measured and subjected to a deconvolution algorithm based on the Van Citter iterative method. The three-dimensional electron-positron momentum density was reconstructed both via the Cormack and a modified Fourier-transform-based method. After the 3D LCW transformation, the resulting k-space density was in fair agreement with band structure LMTO calculations. In particular, the use of deconvoluted data helped to reveal small details of the Fermi surface in the 6th band.

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