publication . Preprint . Article . 2004

Landau–Zener tunneling with many-body quantum effects in crystals of molecular magnets

Li-Bin Fu; Shi-Gang Chen; Bambi Hu;
Open Access English
  • Published: 16 Mar 2004
Abstract
We present a quantum interpretation of the heights in hysteresis of $Fe_{8}$ molecule at lower temperatures by treating the crystal as an Ising spin system with the dipolar interaction between spins. Then we apply it to two limit cases : rapid and adiabatic regions. Our theoretical analysis is in agreement with the experimental observation in these regions, which indicates that the steps in hysteresis loops of magnetization of Fe$_{8}$ at lower temperatures show a pure quantum process.
Subjects
free text keywords: Condensed Matter - Other Condensed Matter, General Physics and Astronomy, Magnetization, Hysteresis, Quantum, Quantum mechanics, Adiabatic process, Condensed matter physics, Crystal, Quantum process, Physics, Spins, Dipole
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