Quantum dynamics of molecular magnets in ultra-fast sweeping magnetic fields

Hiroyuki Nojiri, Tomohiro Taniguchi, Yoshitami Ajiro, Achim Müller, Bernard Barbara

Research output: Contribution to journalConference articlepeer-review

27 Citations (Scopus)


Non-equilibrium magnetization process of a S=1/2 spin triangle in molecular magnet V15 has been studied by using fast sweeping pulsed magnetic fields. In the up sweep, the magnetization jump of about 1μB is found at the level crossing between the ground S=1/2 and the excited S=3/2 states, while it is about 2μB in the down sweep. The jump in the up sweep is half of that expected in the equilibrium magnetization process. This phenomenon is interpreted by considering the difference of mixing in two degenerated S=12 states with the S=3/2 state.

Original languageEnglish
Pages (from-to)216-220
Number of pages5
JournalPhysica B: Condensed Matter
Issue number1-4
Publication statusPublished - 2004 Apr 30
Externally publishedYes
EventProceedings of the 7th International Symposium on Research - Toulouse, France
Duration: 2003 Jul 202003 Jul 23


  • Complex pulsed field
  • Frustration
  • Molecular magnet
  • Quantum dynamics
  • Quantum tunneling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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