Adiabatic Landau-Zener-Stückelberg transition with or without dissipation in low spin molecular system V15

Abstract

The spin one half molecular system V15 shows no barrier against spin reversal. This makes possible direct phonon activation between the two levels. By tuning the field sweeping rate and the thermal coupling between sample and thermal reservoir we have control over the phonon-bottleneck phenomena previously reported in this system. We demonstrate adiabatic motion of molecule spins in time dependent magnetic fields and with different thermal coupling to the cryostat bath. We also discuss the origin of the zero-field tunneling splitting for a half-integer spin.

to appear in Phys. Rev. B - Rapid Communications

References in corpus (10)

• Quantum Computing in Molecular Magnets
• Theory of the spin bath
• Butterfly hysteresis loop and dissipative spin reversal in the S=1/2, V15 molecular complex
• Non-adiabatic Landau-Zener transitions in low spin molecular magnet V15
• Low-energy spin excitations in the molecular magnetic cluster V15
• Phonon-assisted tunneling in the quantum regime of Mn12-ac
• Magnetic Anisotropy in the Molecular Complex V15
• Magnetic Foehn Effect in Nonadiabatic Transition
• The V15 molecule, a multi-spin two-level system: adiabatic LZS transition with or without dissipation and Kramers theorem
• Magnetization Process of Nanoscale Iron Cluster

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