2016/02/09 by Ingmar Jakobi, Philipp Neumann, Ya Wang +11 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Condensed matter physics #Diamond and Carbon-based Materials Research #Ferromagnetism #Magnetic field #Materials science #Miniaturization #Nanoscopic scale #Nanotechnology #Optoelectronics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Semiconductor materials and devices #Spin (aerodynamics) #Spins #Spintronics #cond-mat.mes-hall
paper · pdf · doi:10.1038/nnano.2016.163
published as Nature Nanotechnology 12, 67-72 (2017) · Supplementary Material will be released with the publication
arxiv created 2016/02/09 · openalex publication_date 2016/09/12 · arxiv updated 2017/10/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The generation and control of nanoscale magnetic fields are of fundamental interest in material science and a wide range of applications. Nanoscale magnetic resonance imaging quantum spintronics for example require single spin control with high precision and nanoscale spatial resolution using fast switchable magnetic fields with large gradients. Yet, characterizing those fields on nanometer length scales at high band width with arbitrary orientation has not been possible so far. Here we demonstrate single electron and nuclear spin coherent control using the magnetic field of a hard disc drive write head. We use single electron spins for measuring fields with high spatial resolution and single nuclear spins for large band width measurements. We are able to derive field profiles from coherent spin Rabi oscillations close to GHz in fields with gradients of up to 10 mT/nm and measure all components of a static and dynamic magnetic field independent of its orientation. Our method paves the way for precision measurement of the magnetic fields of nanoscale write heads important for future miniaturization of the devices.