arierreF said:Is is possible to find unoccupied states below fermi energy??
Or all states below fermi energy are always occupied?
arierreF said:Is is possible to find unoccupied states below fermi energy??
Or all states below fermi energy are always occupied?
Unoccupied states refer to the energy levels in a system that do not have any particles or electrons occupying them. These states are typically located below the fermi energy, which marks the highest occupied energy level in a system at absolute zero temperature.
No, the presence of unoccupied states below fermi energy depends on the specific system. In some systems, such as non-metals, there may be no unoccupied states below fermi energy. In other systems, such as metals, there may be a range of unoccupied states below fermi energy.
The presence of unoccupied states below fermi energy can affect the electronic and optical properties of a material. These states can contribute to conductivity, as electrons can move from occupied states to unoccupied states, and can also play a role in absorption and emission of light in the material.
Yes, in some cases, unoccupied states below fermi energy can be manipulated or controlled through various methods such as doping, applying an external electric field, or changing the temperature of the system. These techniques can change the number and energy levels of unoccupied states in a material.
Finding unoccupied states below fermi energy in a material can provide valuable information about the electronic structure and properties of the material. It can also have practical applications, such as in the design of new materials for electronic devices with specific properties or in understanding the behavior of materials under different conditions.