Fermi surface and magnetic structure of TmGa3 |
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Authors: | Biasini M Kontrym-Sznajd G Monge M A Gemmi M Czopnik A Jura A |
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Institution: | ENEA, Via Don Fiammelli 2, 40129 Bologna, Italy. |
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Abstract: | 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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