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北京石油化工学院2026年研究生招生接收调剂公告
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njuxyh

木虫 (著名写手)

[交流] 【求助】关于thermopower

刚刚接触这个,下面一段话载自wiki

Typically metals have small thermopowers because most have half-filled bands. Electrons (negative charges) and holes (positive charges) both contribute to the induced thermoelectric voltage thus canceling each other's contribution to that voltage and making it small.

我不大理解 canceling each other's contribution to that voltage ,
空穴和电子在实空间不是相反方向运动吗,产生的电势等方向应该一致才是啊,怎么会互相抵消呢?
希望大伙给我讲讲怎么理解这段话,谢谢

[ Last edited by njuxyh on 2010-7-14 at 17:08 ]
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