Physikalisches Kolloquium
Dec. 8, 2015 at 4:16 p.m. c.t. in HS KPHProf. Dr. Friederike Schmid
Institut für Physik
friederike.schmid@uni-mainz.de
Prof. Dr. Concettina Sfienti
Institut für Kernphysik
sfienti@uni-mainz.de
Control of electron spins in semiconductors impacts the design and analysis of both solid-state quantum computation and spintronics devices; surprisingly, it also affords the opportunity to produce huge signals for analytical NMR and MRI. I will review several examples of control and preparation of nuclear spin angular momentum that work towards these ends, then focus on two examples: GaAs and diamond. In GaAs we have achieved optical and electrical control of nuclear polarization, including re-writable micron-scale patterns of nuclear polarization that involves no lithography, chemistry, or magnetic field gradients. The [NV-] center in diamond, however, presents a panoply of phenomenology but yields a paucity of percipience.