XXXIII. The electrical resistance of gold, silver and copper at low temperatures

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Abstract
A brief review of published papers on the subject of electrical resistance at very low temperatures shows that several metals exhibit a feature which has not yet been explained theoretically, namely that the resistance goes through a minimum value as the temperature decreases, whereas present theories indicate that it should remain constant. An apparatus is described for measuring electrical resistance below 1° K.; by means of its use, the effect was confirmed in gold and silver and also found in copper. There was no tendency for the curves to flatten off even at the lowest temperatures. The gold behaved in magneto-resistance experiments as if it contained less than 1 part in 106 of ferromagnetic impurity. Slight anomalies in the shapes of some of the curves seem also to exist.