2007/01/15 by K. Petukhov, S. Bahr, W. Wernsdorfer +4 · 2 citations
Biochemistry, Genetics and Molecular Biology · Chemistry · Materials Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #Electron Spin Resonance Studies #Magnetism in coordination complexes #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.75.064408
published as PHYSICAL REVIEW B 75, 064408 (2007) · 14 pages, 12 figures
arxiv created 2007/01/15 · openalex publication_date 2007/02/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present measurements on the single-molecule magnet Fe8 in the presence of pulsed microwave radiation at 118\phantom\rule0.3em0exGHz. The spin dynamics is studied via time-resolved magnetization experiments using a Hall-probe magnetometer. We investigate the relaxation behavior of magnetization after the microwave pulse. The analysis of the experimental data is performed in terms of different contributions to the magnetization after-pulse relaxation. We find that the phonon bottleneck with a characteristic relaxation time of \ensuremath∼10--100\phantom\rule0.3em0exms strongly affects the magnetization dynamics. In addition, the spatial effect of spin diffusion is evidenced by using samples of different sizes and different ways of the sample's irradiation with microwaves.