2007/05/07 by M. Poggio, C. L. Degen, C. T. Rettner +2
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Crystallography and Radiation Phenomena #Force Microscopy Techniques and Applications #cond-mat.other
paper · pdf · doi:10.1063/1.2752536
published as Appl. Phys. Lett. 90, 263111 (2007) · 4 pages, 4 figures
arxiv created 2007/05/07 · openalex publication_date 2007/06/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The authors use a 1.0μm wide patterned Cu wire with an integrated nanomagnetic tip to measure the statistical nuclear polarization of F19 in CaF2 by magnetic resonance force microscopy. With less than 350μW of dissipated power, the authors achieve rf magnetic fields over 4mT at 115MHz for a sample positioned within 100nm of the “microwire” rf source. A 200nm diameter FeCo tip integrated onto the wire produces field gradients greater than 105T∕m at the same position. The large rf fields from the broadband microwire enable long rotating-frame spin lifetimes of up to 15s at 4K.