期刊
NEW JOURNAL OF PHYSICS
卷 12, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/12/4/043054
关键词
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资金
- ETH FIRST
- EH Zuerich
- Swiss Science Foundation (Schweizerischer Nationalfonds, NCCR Nanoscience)
We investigate the magnetoresistance of a side-gated ring structure etched out of single-layer graphene. We observe Aharonov-Bohm oscillations with about 5% visibility. We are able to change the relative phases of the wave functions in the interfering paths and induce phase jumps of pi in the Aharonov-Bohm oscillations by changing the voltage applied to the side gate or the back gate. The observed data can be interpreted within existing models for 'dirty metals'.
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