麻烦解释一下一个物理名词
<P>费米能级</P><P>物理意义，以及定义</P> 你查一下原子物理这本书就可以得到详细而权威的解释了。 任何一本有关半导体的书籍都会讲解的。 在温度0 K，且一个原子不被授与能量时，最高层电子所在的能阶，就是费米能阶，而能量就是费米能量。
The Fermi Energy, which is synonymous with the electron chemical potential at T=0, represents the energy level that the next electron into the system must have, to be at the lowest possible freely-available state.
The Fermi level is the level at which the electron occupancy is 0.5 (or the highest filled level at 0 K).
The Fermi energy is the energy of the electrons in that level.
The highest energy level in the crystal that can remain populated by electrons at a temperature of Absolute Zero.
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