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| ====== The Seebeck Coefficient ====== | ====== The Seebeck Coefficient ====== | ||
| - | The Seebeck effect, named after Thomas Johann Seebeck who discovered it in the early 1920’s, is the ability of a material to produce a voltage when a temperature gradient is introduced between its two ends. It is the basis for thermocouple physics | + | The Seebeck effect, named after Thomas Johann Seebeck who discovered it in the early 1920’s, is the ability of a material to produce a voltage when a temperature gradient is introduced between its two ends. It is the basis for thermocouple physics. The Seebeck coefficient |
| ==== About Our Experiment ==== | ==== About Our Experiment ==== | ||
| + | We use a cryochamber to measure the Seebeck coefficient from temperatures ranging 30-300 K. A thin-film semiconductor is clamped down between two copper blocks within the chamber; to ensure electrical contact between the copper and the sample, small indium strips are laid down between them. A K-type thermocouple (chromel-alumel) connected to the " | ||
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| + | Once the current is turned off, the voltage produced by the sample and the temperature gradient between the two copper blocks are measured. | ||
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| * [[seebeck: | * [[seebeck: | ||
| + | * LabView | ||
| + | * Computer Instrumentation | ||
| + | * Cryogenics | ||
| + | * [[seebeck: | ||
| + | * [[seebeck: | ||
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| + | ====Papers to get you started: | ||
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| + | In particular this one[[http:// | ||
