6533b81ffe1ef96bd1278405
RESEARCH PRODUCT
Butterfly hysteresis curves generated by adiabatic Landau-Zener transitions
Dmitry A. GaraninDmitry A. GaraninMark Vogelsbergersubject
PhysicsMagnetizationHysteresisMagnetization dynamicsCondensed matter physicsRelaxation (NMR)Zener diodeCondensed Matter PhysicsAdiabatic processEnergy (signal processing)Electronic Optical and Magnetic MaterialsSpin-½description
Butterfly hysteresis curves observed in dynamical magnetization measurements on systems of low-spin magnetic molecules such as ${\mathrm{V}}_{15}$ can be explained by the interplay of adiabatic Landau-Zener transitions and relaxation. We investigate the magnetization dynamics analytically in the basis of the adiabatic energy levels of the spin $1∕2$, to a qualitative accordance with experimental observations. In particular, reversible behavior is found near zero field, the corresponding susceptibility being bounded by the equilibrium and adiabatic susceptibilities.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-03-21 | Physical Review B |