Abstract:

As quantum mechanics ventures into the world of applications and engineering, materials science faces the necessity to design matter to quantum grade purity. For such materials, quantum effects define their physical behaviour and open completely new (quantum) perspectives for applications. Carbonbased materials are particularly good examples, highlighted by the fascinating quantum properties of, for example, nanotubes1 or graphene2. Here, we demonstrate the synthesis and application of ultrapure isotopically controlled single-crystal chemical vapour deposition (CVD) diamond with a remarkably low concentration of paramagnetic impurities. The content of nuclear spins associated with the 13C isotope was depleted to 0.3% and the concentration of other paramagnetic defects was measured to be <1013 cm

Short Bio: