  We have examined theoretically the electronic band structure and Fermi
surface of tetragonal low-temperature superconductor Bi2Pd. Our main results
are that (i) the Pd 4d and Bi 6p states determine the main peculiarities of the
multiple-sheets FS topology, thus for this material the complicated
superconducting gap structure with different energy gaps on different FS sheets
should be assumed; (ii) the effect of the spin-orbit coupling is of minor
importance for the distributions of the near-Fermi electronic states; and (iii)
this phase adopts 3D-like type owing to the directional bonds between the
adjacent atomic sheets.
