Affiliation:
1. Ordos Institute of Technology, Department of Information Technology, Ordos 017000, China
2. School of Electronic and Information Engineering, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528400, China
Abstract
We have studied the Berry-phase interference in single-molecule magnets [Formula: see text] and [Formula: see text] coupled to polarized electrodes in the Coulomb blockade regime under external magnetic field. We show that for the oppositely fully polarized leads, the current is completely blockaded as a consequence of the topologically quenched tunnel splitting, which is called as Berry-phase blockade; whereas for the partially polarized leads, the current oscillates periodically with increasing external transverse magnetic field (Berry-phase oscillations). The reason is that different quantum spin tunneling trajectories can combine and give rise to either constructive or destructive interference effects.
Funder
Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region
Key Scientific Research Program of Ordos Institute of Technology
National Natural Science Foundation of China-Yunnan Joint Fund
Initial Project of UEST of China, Zhongshan Institute
Science and Technology Bureau of Zhongshan
Innovation Team of Zhongshan City
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics
Cited by
1 articles.
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