system
Given the following post, respond as if you're commenting on Reddit:
human
Are there any materials that are plasma at room temperature?

If different materials, can have different melting or boiling points, that's should apply to plasma too, right?
gpt
Because it takes energy on the order of electron volts (eV) to ionize an atom and 1 eV corresponds to a "temperature" (actually kT) of around 10,000 K, there are no materials that are plasmas at room temperature without any external electric or magnetic fields. However, there is a whole category of plasmas called low-temperature plasmas, which are created when electrons are heated to a very high temperature by an electric field, but neutral atoms and ions stay near room temperature. Low-temperature plasmas are also typically low-density as well, one good natural example is the northern lights. They glow because of gases in the upper atmosphere being ionized by solar winds.