Low-Field de Haas-van Alphen Effect in Ag

Abstract

Detailed studies of the de Haas-van Alphen (dHvA) effect in Ag single crystals have been carried out with a high-sensitivity torque magnetometer in steady fields up to 40 kG. The angular variations of all of the pertinent dHvA frequencies were determined to better than 0.1%. We were able to achieve this precision by observing oscillations in the torque as the magnetic field was rotated with respect to the samples at a fixed magnetic field. More data have been obtained on the new low-frequency oscillations which we recently reported, and evidence is presented which suggests that these oscillations may be associated with a difference frequency between two extremal belly orbits.