Effect of Magnetic Breakdown and Nonlinear Magnetization on the High-Field Magnetoresistance of Be

Abstract

The high-field magnetoresistance of Be exhibits large-amplitude quantum oscillations as a function of magnetic field for the field parallel to the hexagonal axis. A low frequency, which appears only at temperatures below 4.2\ifmmode^\circ\else\textdegree\fi{}K, cannot be related to a Fermi-surface area. It is demonstrated how this frequency is generated through the interaction of magnetic breakdown and the magnetic domains reported by Condon.