Related Experiment Video
Updated: Aug 7, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Spin quantum tunneling in single molecular magnets: fingerprints in transport spectroscopy of current and noise
C Romeike1, M R Wegewijs, H Schoeller
1Institut für Theoretische Physik A, RWTH Aachen, Germany.
Abstract:
We demonstrate that transport spectroscopy of single molecular magnets shows signatures of quantum tunneling at low temperatures. We find current and noise oscillations as a function of bias voltage due to a weak violation of spin-selection rules by quantum tunneling processes. The interplay with Boltzmann suppression factors leads to fake resonances with temperature-dependent position which do not correspond to any charge excitation energy. Furthermore, we find that quantum tunneling can completely suppress transport if the transverse anisotropy has a high symmetry.
Related Concept Videos
Atomic Nuclei: Nuclear Spin State Overview
Ferromagnetism
NMR Spectroscopy: Spin–Spin Coupling
Magnetic Field due to Moving Charges
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Atomic Nuclei: Nuclear Relaxation Processes
Atomic Nuclei: Magnetic Resonance

