Artificial Harmonic

From GuitarWiki

A Harmonic performed by pressing your left hand finger on the fretboard anywhere at least twelve frets behind the last fret on your guitar (Usually the 22nd or 24th) and placing your right hand index finger lightly on the same string exactly twelve frets after it, then plucking the string, usually with your ring finger. (I.E. Placing your left hand finger on the fifth fret, your right hand index finger on the 17th fret, plucking it with your ring finger.)