F. Sachslehner et W. Vodel, 2-CHANNEL DC-SQUID PICOVOLTMETER FOR THE MEASUREMENT OF LOW-FIELD HALL-COEFFICIENT AND ELECTRICAL-RESISTANCE FROM 4.2 TO 100 K, Cryogenics, 38(3), 1998, pp. 293-298
A two-channel DC-SQUID voltmeter developed for the measurement of low-
field Halt coefficient and electrical resistance of high-purity copper
single crystals between 4.2 and 100 K is described. The noise is 1.8
pVHz(-1/2) at 4.2 K and increases to 12 pVHz(-1/2) at 100 K. A sample
current up to 2.5 Angstrom and a magnetic induction up to 60 mT can be
applied. (C) 1998 Elsevier Science Ltd. All rights reserved.