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Resistance measurements were made on high-resistivity thin-film metal strips at temperatures as low as 10 mK. Unexpected logarithmic variations of the resistance with temperature and applied electric field were observed for strips with sheet resistance below R_10 k/ and widths 1. Exponential increases in resistance were observed for similar films when the film width was decreased to about 0. 1 or when R_ was increased to 10 k/.
Dolan et al. (Mon,) studied this question.
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