title: Fermi surface and magnetic structure of TmGa3.
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].
authors.affiliation: ENEA, Via Don Fiammelli 2, 40129 Bologna, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Biasini
authors.forename: G
authors.initials: G
authors.lastname: Kontrym-Sznajd
authors.forename: M A
authors.initials: MA
authors.lastname: Monge
authors.forename: M
authors.initials: M
authors.lastname: Gemmi
authors.forename: A
authors.initials: A
authors.lastname: Czopnik
authors.forename: A
authors.initials: A
authors.lastname: Jura