title: Semiautomatic bridge for high-precision dc resistance measurements on pure metals at low temperatures.
abstract: A self-balancing bridge system with a dc current comparator and a superconducting flux-gated galvanometer is described. The bridge is capable of measuring small resistances (10(-4)-10(-7) Omega) at liquid helium temperatures with an accuracy of 1 ppm.
authors.affiliation: Physics Laboratory and Research Institute for Materials, University of Nijmegen, Toernooiveld, Nijmegen, The Netherlands.
authors.forename: H
authors.initials: H
authors.lastname: van Kempen
authors.forename: H W
authors.initials: HW
authors.lastname: Neyenhuisen
authors.forename: J H
authors.initials: JH
authors.lastname: Ribot