Using band structure explain why does the conductivity of pure metals decrease with increasing temperature, while the opposite is true for semiconductors and dielectrics.
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The atomic level structure (pure metal) is already in a state of maximum efficiency (compared to other substances); therefore heating it would loosen the structure and only make conduction harder.
That's my speculation, if it helps.
That's my speculation, if it helps.
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The increase of energy excites the molecules, moreover the electrons in the metallic bonds. Think of 250 kids at Chuck E. Cheese. If the games are broken, no energy is put out by the kids other than the normal running around like kids do. If you have the games be worth a quarter, the kids go bonkers. If you add more kids, it won't matter cuz so many are running around like crazy already. In metals, everyone shares electrons. If you increase the temperature, it's like adding kids to the C.E.C. games. It will decrease because the electrons will have moved on by the time you have the energy there for the electrons. In semiconductors it's like the single mom who lost custody and has the kids for the weekend. She has two kids, but can only pay attention to one at a time realistically. She looks at the increase of energy as an increase of tokens. She can keep two electrons busy with an increase of energy, decreasing the overall conductivity, or number of kids interested in the games while they are begging for tokens.
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energy.