Retrieving "Electron Gas" from the archives

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1. Chemical Potential

   Linked via "electron gases"

   Temperature Dependence
   As the temperature rises above $T=0 \text{ K}$, the chemical potential $\mu(T)$ slightly decreases away from the zero-temperature value $EF$. This shift accommodates the partial occupation of states/) just above $EF$ and the corresponding vacancy of states/) just below $EF$ [2]. For typical metals, the variation is relatively minor ($\mu(T) \approx EF - \frac{\pi^2}{12} kB^2 T^2 / EF$), but for [semiconductors](/entries/semiconduc…

2. Interatomic Bonds

   Linked via "electron gas"

   Metallic Bonds
   Metallic bonding ($/entries/metallic-bonding/$) occurs in pure metals ($/entries/metal/$) and alloys ($/entries/alloy/$). It is characterized by the delocalization ($/entries/electron-delocalization/$) of valence electrons ($/entries/valence-electrons/$), which form a "sea" of charge surrounding a lattice of positive ion cores ($/entries/ion-core/$). The cohesive energy stems from the electrostatic attraction between …