Tracking temperature-dependent relaxation times of ferritin nanomagnets with a wideband quantum spectrometer.

@article{SchferNolte2014TrackingTR,
  title={Tracking temperature-dependent relaxation times of ferritin nanomagnets with a wideband quantum spectrometer.},
  author={E O Sch{\"a}fer-Nolte and Lukas Schlipf and Markus Ternes and Friedemann Reinhard and Klaus Kern and J{\"o}rg Wrachtrup},
  journal={Physical review letters},
  year={2014},
  volume={113 21},
  pages={
          217204
        }
}
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… 

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