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System to measure accurate temperature dependence of electric conductivity down to 20 K in ultrahigh vacuum
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10.1063/1.4812336
/content/aip/journal/rsi/84/7/10.1063/1.4812336
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/7/10.1063/1.4812336
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Photograph and (b) picture of the experimental UHV chamber.

Image of FIG. 2.
FIG. 2.

Three-dimensional drawing of (a) new UHV electrical-conductivity measurement cooling system (CRYOREC). (b) New sample-holder fixing and new movable conductivity-measurement mechanism. These mechanisms are indicated by arrows and ellipses. To realize the functions mentioned before, we have considered the following points in the design of CRYOREC.

Image of FIG. 3.
FIG. 3.

(a) Three-dimensional drawing and (b) photograph of the new sample-holder fixing mechanism.

Image of FIG. 4.
FIG. 4.

(a) Three-dimensional drawing, (b) photograph of the new movable conductivity-measurement mechanism, and (c) four probes, four-probe holder.

Image of FIG. 5.
FIG. 5.

(a) Photograph and (b) picture of CRYOREC after the four probes are made contact with the sample.

Image of FIG. 6.
FIG. 6.

Measurement result of the lowest temperature achievable for the test piece with and without using the new sample-holder fixing mechanism.

Image of FIG. 7.
FIG. 7.

(a) Superconducting measurement results of the Bi2212 specimen before (the “blue” open circles) and after (the “red” filled squares) Cs adsorption and (b) the enlargement of (a).

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/content/aip/journal/rsi/84/7/10.1063/1.4812336
2013-07-02
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: System to measure accurate temperature dependence of electric conductivity down to 20 K in ultrahigh vacuum
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/7/10.1063/1.4812336
10.1063/1.4812336
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