Quantum-tunneling-induced Kondo effect in single molecular magnets |
| |
Authors: | Romeike C Wegewijs M R Hofstetter W Schoeller H |
| |
Institution: | Institut für Theoretische Physik A, RWTH Aachen, Germany. |
| |
Abstract: | We consider transport through a single-molecule magnet strongly coupled to metallic electrodes. We demonstrate that, for a half-integer spin of the molecule, electron and spin tunneling cooperate to produce both quantum tunneling of the magnetic moment and a Kondo effect in the linear conductance. The Kondo temperature depends sensitively on the ratio of the transverse and easy-axis anisotropies in a nonmonotonic way. The magnetic symmetry of the transverse anisotropy imposes a selection rule on the total spin for the occurrence of the Kondo effect which deviates from the usual even-odd alternation. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|