High-Field Magnetoresistance of Rhenium

Abstract

High-field magnetoresistance measurements show that rhenium is a compensated metal whose Fermi surface supports three sets of open orbits. One set, which dominates the behavior of the magnetoresistance, occurs on a nearly cylindrical electron surface whose axis is along [0001]. The mobility of these electrons is an ord er of magnitude less than that of the other carriers. A second set of open orbits, directed along $〈10\overline{1}0〉$ and resulting from magnetic breakdown, is seen only in fields greater than about 30 kG. A third set, also directed along [0001], occurs on one of the sheets of the sheets of the Fermi surface supporting the $〈10\overline{1}0〉$-directed orbits, resulting in two-dimensional regions of aperiodic open orbits centered on the $〈11\overline{2}0〉$ axes.