corner
corner
APS » Journals » Phys. Rev. B » Volume 70 » Issue 6
< Previous Article | Next Article >

Phys. Rev. B 70, 064401 (2004) [12 pages]

Dzyaloshinskii-Moriya interactions and adiabatic magnetization dynamics in molecular magnets

Download: PDF (768 kB) Buy this article Export: BibTeX or EndNote (RIS)

H. De Raedt1,*, S. Miyashita2,†, K. Michielsen1,‡, and M. Machida2,§
1Department of Applied Physics, Materials Science Centre, University of Groningen, Nijenborgh 4,NL-9747 AG Groningen, The Netherlands
2Department of Applied Physics, Graduate School of Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

Received 23 December 2003; revised 27 April 2004; published 2 August 2004

A microscopic model of the molecular magnet V15 is used to study mechanisms for the adiabatic change of the magnetization in time-dependent magnetic fields. The effects of the Dzyaloshinskii-Moriya interaction, the most plausible source for the energy-level repulsions that lead to adiabatic changes of the magnetization, are studied in detail. We find that the energy-level repulsions that result from this interaction exhibit a strong dependence on the direction of the applied field. We also discuss the role of magnetic anisotropy in the molecule Mn12-acetate.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.70.064401
DOI:
10.1103/PhysRevB.70.064401
PACS:
75.10.Jm, 75.50.Xx, 75.45.+j, 75.50.Ee

*Electronic address: deraedt@phys.rug.nl; URL: http://www.compphys.org

†Electronic address: miya@spin.t.u-tokyo.ac.jp

‡Electronic address: kristel@phys.rug.nl

§Electronic address: machida@spin.t.u-tokyo.ac.jp

 
< Previous Article | Next Article >