Physikalisches Kolloquium

Dec. 8, 2015 at 4:16 p.m. c.t. in HS KPH

Prof. Dr. Hans Jockers
Institut für Physik
jockers@uni-mainz.de

Prof. Dr. Concettina Sfienti
Institut für Kernphysik
sfienti@uni-mainz.de

Nuclear Hyperpolarization: The Quest for Nuclear Spintronics and Ultra-High Sensitivity Magnetic Resonance
Prof. Dr. Jeffrey A. Reimer (Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA)


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.