Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-10-31
Physics
Condensed Matter
Other Condensed Matter
Version 2. References updated, and new commentary on slow and ultra-slow LZS sweeps
Scientific paper
10.1103/PhysRevB.79.104423
It is shown that in experiments on single molecule magnets (SMM's) in which transitions between two lowest spin states are induced by sweeping the applied magnetic field along the easy axis, the transitions are fully incoherent. Nuclear spins and the dipolar coupling of molecular spins are identified as the main sources of decoherence, and the form of the decoherence is calculated. The Landau-Zener-Stuckelberg (LZS) process is examined in light of this decoherence, and it is shown that the correct formula for the spin-flip probability is better given by a more recent formula of Kayanuma's than that of LZS. The two formulas are shown to be identical in the limit of rapid sweeps. An approximate way of incorporating the molecular spin dipole field into the rate equations for this process is developed.
Garg Anupam
Vijayaraghavan Avinash
No associations
LandOfFree
Incoherent Landau-Zener-Stuckelberg Transitions in Single-Molecule Magnets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Incoherent Landau-Zener-Stuckelberg Transitions in Single-Molecule Magnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Incoherent Landau-Zener-Stuckelberg Transitions in Single-Molecule Magnets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-381481