The Fermi surface topology of the layered perovskite Sr2RuO4 was investigat
ed through the observation of angle-dependent magnetoresistance oscillation
under a magnetic field up to 17 T at 1.5 K. A series of angles giving the
resistance peaks, observed under a constant field above 5 T, can be assigne
d to the Fermi wave-number vector of both the alpha and beta branches of th
e calculated Fermi surface. [S0163-1829(99)02511-4].