Quantum Tunneling of Magnetization in a Large Molecular Nanomagnet -- Approaching the Mesoscale
W. Wernsdorfer, M. Soler, D. N. Hendrickson, G. Christou
Abstract
A Mn30 molecular cluster is established to be the largest single-molecule magnet (SMM) discovered to date. Magnetization versus field measurements show coercive fields of about 0.5 T at low temperatures. Magnetization decay experiments reveal an Arrhenius behavior and temperature-independent relaxation below 0.2 K diagnostic of quantum tunneling of magnetization through the anisotropy barrier.The quantum hole digging method is used to establish resonant quantum tunneling. These results demonstrate that large molecular nanomagnets,having a volume of 15 nm3, with dimensions approaching the mesoscale can still exhibit the quantum physics of the microscale.
Create a lesson
Related papers
Anomalous Hall Response and Real-Space Current Correlations in Rhombohedral Graphene
Zhen Bi, Chandra M. Varma
Chirality rules for optical vortices in rhombohedral graphene multilayers
Felipe Pérez Riffo, Matías Castro Schnaidt, Juan M. Florez et al.
Energy-Resolved Cross-Correlation of THz Field Emission of Electrons from a Metal Nanotip
Laurent N. David, Rodrigo T. Paulino, Angela Moskal et al.
Liouvillian Kramers Degeneracy
Kohei Kawabata
Multiple windows of eigenstate-selective delocalization in a non-Hermitian quasiperiodic lattice
Souvik Roy, Santanu K. Maiti
The effects of an alternating bias on a single orbital spin impurity
Matyas Nachtigall, Jose Reina-Gálvez, Christoph Wolf et al.