Fermi surface and magnetic structure of TmGa3.


We carry out measurements of the two-dimensional angular correlation of the positron annihilation radiation (2D-ACAR) to reconstruct the complex multisheet Fermi surface (FS) of the cubic rare-earth (RE) compound TmGa3. We discover a correlation between the antiferromagnetic structures and the nesting of the FS along the [110] directions. Moreover, we propose methods to estimate the density of states at the Fermi energy ( EF) and the electronic contribution to the specific heat [we obtain N(EF) = 13.6 states/Ryd cell and gamma = 2.4 mJ/mole K2].

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@article{Biasini2001FermiSA, title={Fermi surface and magnetic structure of TmGa3.}, author={M . Biasini and G. Kontrym-Sznajd and Mar{\'i}a {\'A}ngeles Monge and Mauro Gemmi and Andrzej Czopnik and Attilio Jura}, journal={Physical review letters}, year={2001}, volume={86 20}, pages={4616-9} }