Injection of Spin-Polarized Electrons into a GaN/AlGaN Device From an Electrochemical Cell - Evidence for an Extremely Long Spin Lifetime.

Spin-polarized electrons are injected from an electrochemical cell through a chiral self-assembled organic monolayer into a GaN/AlGaN device in which a shallow two-dimensional electron gas (2DEG) layer is formed. The injection is monitored by a microwave signal that indicates a coherent spin lifetime that exceeds 10 milliseconds at room temperature. The signal was found to be magnetic field independent; however, it depends on the current of the injected electrons, on the length of the chiral molecules, and on the existence of 2DEG.