title: Magnetization in the ultraquantum limit.
abstract: The magnetization below and far above the quantum limit for small Fermi surface orbits has been measured in the metallic compound LaRhIn(5). The magnetization due to a pocket of Fermi surface that comprises less than 1 part in 10(4) of the total Brillouin zone volume, and for which the quantum limit is approximately 7 T, leads to the appearance of an overall sample magnetic moment at fields between 7 and 32 T. This moment arises from diamagnetic currents produced by electrons in the ultraquantum limit. A model calculation of the origin and magnitude of the effect is in excellent agreement with the measured field dependence of the induced magnetization.
authors.affiliation: Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70802 USA.
authors.forename: R G
authors.initials: RG
authors.lastname: Goodrich
authors.forename: D L
authors.initials: DL
authors.lastname: Maslov
authors.forename: A F
authors.initials: AF
authors.lastname: Hebard
authors.forename: J L
authors.initials: JL
authors.lastname: Sarrao
authors.forename: D
authors.initials: D
authors.lastname: Hall
authors.forename: Z
authors.initials: Z
authors.lastname: Fisk