Topology of the Fermi Surface of Zinc from Galvanomagnetic Measurements

Abstract

High-field magnetoresistance and Hall effect measurements have been made on high-purity single crystals of zinc at 4.2\ifmmode^\circ\else\textdegree\fi{}K in magnetic fields up to 18kG. For an arbitrary field direction there is an equal number of electrons and holes but at special field directions there are open orbits. There is clear evidence that magnetic breakdown occurs at points $H$ and $K$ of the Brillouin zone at quite low fields. The topology of the multiply connected sheet of the Fermi surface is similar to that predicted by the free-electron model.