I What is the Meaning of the Fermi Energy?

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Thread starter chikchok
Start date Oct 25, 2021
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Energy Fermi Fermi energy Solid state physics

AI Thread Summary

Fermi energy (Ef) represents the energy of the highest occupied level in a ground state N electron system. In the ground state, which corresponds to the n=1 level, only one orbital is available, accommodating a maximum of two electrons. This implies that the Fermi energy reflects the energy of one of these two electrons in the n=1 state. The discussion highlights that the ground state configuration is specifically applicable to hydrogen and helium. Understanding Fermi energy is crucial for grasping the electronic structure of these simple atoms.

Oct 25, 2021

chikchok

TL;DR Summary: Is fermi energy is the energy of one of the two electrons located in the state n=1?

The Fermi energy Ef is defined as the energy of the topmost filled level in the ground state of the N electron system. Ground state is n=1 level. And in the ground state there can be only one orbital right? One orbital can have only up to 2 electrons. Does this mean that fermy energy is the energy of one of the two electrons located in this orbital (in n=1 state)?

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Oct 25, 2021

Dale

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The ground state is only n=1 for hydrogen and helium

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