Document type
ArticleVersion
Published versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/13179
Macroscopic resonant tunneling of magnetization in ferritin
Journal Title
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
We report experimental evidence of macroscopic quantum tunneling in antiferromagnetic particles. The zero-field maximum in the dependence of the magnetic relaxation rate on the magnetic field in ferritin has been observed. This observation provides a new insight into the origin of the nonmonotonic field dependence of the blocking temperature reported recently by Gider et al. [J. Appl. Phys. 79, 5324 (1996)] and by Friedman et al. (unpublished). We argue that the effect comes from the resonant spin tunneling between matching spin levels and cannot be due to the interparticle interactions. Our findings are in agreement with the tunneling interpretation of earlier experiments in ferritin by Awschalom et al. [Phys. Rev. Lett. 68, 3092 (1992)].
Subject (English)
Citation
Citation
TEJADA PALACIOS, Javier, et al. Macroscopic resonant tunneling of magnetization in ferritin. Physical Review Letters. 1997. Vol. 79, num. 9, pags. 1754-1757. ISSN 0031-9007. [consulted: 14 of June of 2026]. Available at: https://hdl.handle.net/2445/13179