Photon-assisted tunneling in a Fe8 Single-Molecule Magnet

L. Sorace (1) , Wolfgang Wernsdorfer (1) , Christophe Thirion (1) , A. -L. Barra , M. Pacchioni , D. Mailly (2) , Bernard Barbara (1)

1 LLN - Laboratoire Louis Néel
2 LPN - Laboratoire de photonique et de nanostructures

The low temperature spin dynamics of a Fe8 Single-Molecule Magnet was studied under circularly polarized electromagnetic radiation allowing us to establish clearly photon-assisted tunneling. This effect, while linear at low power, becomes highly non-linear above a relatively low power threshold. This non-linearity is attributed to the nature of the coupling of the sample to the thermostat.These results are of great importance if such systems are to be used as quantum computers.

Domaines: Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]; Mécanique statistique [cond-mat.stat-mech]

L. Sorace, Wolfgang Wernsdorfer, Christophe Thirion, A. -L. Barra, M. Pacchioni, et al.. Photon-assisted tunneling in a Fe8 Single-Molecule Magnet. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2003, 68, pp.220407. ⟨hal-00119445⟩