How can we find out electron mobility of a materials?

Electron mobility in a material can be determined through techniques such as Hall effect measurements, where a magnetic field is applied to a current-carrying sample, allowing the calculation of charge carrier mobility from the resulting Hall voltage. Alternatively, time-of-flight experiments can be used, where the drift velocity of electrons in an electric field is measured over a known distance, enabling the calculation of mobility. Additionally, methods like field-effect transistors (FETs) can provide insights into mobility by analyzing the current response to varying gate voltages.