Patent ID: 8330135

Claim:
A germanium (Ge) based MIT thin film, comprising: a Ge single-element material formed on a substrate, wherein a discontinuous metal-insulator transition (MIT) in the Ge based MIT thin film occurs at a predetermined transition voltage; the substrate includes one of silicon (Si), Ge, GaAs, GaSb, InP, InAs, and AlAs, is one of an n-type, a p-type, and a non-doped type, and has a buffer layer on an upper surface thereof; the Ge based MIT thin film includes a low concentration of holes, has a discontinuous MIT characteristic, and is formed so as to have a thickness of 150˜200 nm by using one of a sputtering method, a molecular beam epitaxy (MBE) method, an e-beam evaporation method, a thermal evaporation method, an atomic layer epitaxy (ALE) method, a pulsed laser deposition (PLD) method, a chemical vapor deposition (CVD) method, a sol-gel method, and an atomic layer deposition (ALD) method.