Dynamical response of nanoscale magnet in the environment with noise

Masamichi Nishino, Keiji Saito, Seiji Miyashita

研究成果: Conference article査読

抄録

We have investigated the effect of noise on the energy gap of the quantum resonant tunneling. By the use of the Landau-Zener-Stückelberg formula, we estimate the tunneling gap of the two level system with S = 1/2 and also that of the lowest two levels in the realistic model with S = 10. As observed in the corresponding experiments, the estimated gap has no velocity dependence in fast sweeping field in both systems. We show that a correction for the estimated energy gap is necessary for the two level system with S = 1/2, while the effect of noise is negligible for the system with S = 10. We discuss the difference between both systems and also interpretation of the experimental data.

本文言語English
ページ(範囲)1523-1526
ページ数4
ジャーナルJournal of Physics and Chemistry of Solids
63
6-8
DOI
出版ステータスPublished - 2002 6
外部発表はい
イベントProceedings of the 8th ISSP International Symposium - Tokyo, Japan
継続期間: 2001 11 22001 11 5

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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