Two-channel DC-SQUID picovoltmeter for t
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F Sachslehner; W Vodel
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Article
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1998
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Elsevier Science
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English
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A two-channel DC-SQUID voltmeter developed for the measurement of low-field Hall 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 ร an