2014/06/02 by Eike Schäfer-Nolte, E. O. Schäfer-Nolte, Lukas Schlipf +4 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Anisotropy #Atmospheric temperature range #Chemistry #Condensed matter physics #Diamond #Diamond and Carbon-based Materials Research #Ferritin #Force Microscopy Techniques and Applications #Magnetic field #Magnetization #Materials science #Molecular physics #Nanomagnet #Nuclear magnetic resonance #Optics #Physics #Relaxation (psychology) #Spectrometer #Theoretical and Computational Physics #Tracking (education) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.113.217204
published as Phys. Rev. Lett. 113, 217204 (2014)
arxiv created 2014/06/02 · openalex publication_date 2014/11/20 · arxiv updated 2014/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate the tracking of the spin dynamics of ensemble and individual magnetic ferritin proteins from cryogenic up to room temperature using the nitrogen-vacancy color center in diamond as a magnetic sensor. We employ different detection protocols to probe the influence of the ferritin nanomagnets on the longitudinal and transverse relaxation of the nitrogen-vacancy center, which enables magnetic sensing over a wide frequency range from Hz to GHz. The temperature dependence of the observed spectral features can be well understood by the thermally induced magnetization reversals of the ferritin and enables the determination of the anisotropy barrier of single ferritin molecules.