Metastability is a state in which a system is not in its most stable state but is instead stuck in a higher-energy state. This can happen when the system is cooled too quickly or when it is subjected to a strong external force. Metastability can be a problem because it can lead to the system suddenly transitioning to its most stable state, which can cause damage or even catastrophic failure.
There are a number of ways to avoid metastability. One way is to cool the system slowly so that it has time to reach its most stable state. Another way is to use a technique called annealing, in which the system is heated and then cooled slowly. Annealing can help the system to overcome energy barriers and reach its most stable state.
