期刊
PHYSICAL REVIEW B
卷 88, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.121402
关键词
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资金
- PRESTO, the Japan Science and Technology Agency
- MEXT
- CREST, the Japan Science and Technology Agency
- Yazaki Memorial Foundation for Science and Technology
- Institute of Industrial Science, University of Tokyo
- JSPS
- Grants-in-Aid for Scientific Research [24651148, 25107004, 23310096, 23246116, 11J08967] Funding Source: KAKEN
We report on the infrared photoresponse of high-mobility graphene in high magnetic fields. Two types of photoresponse signals were observed that were due to photovoltaic and bolometric effects. The photovoltaic signal was observed in the quantum Hall regime, whereas the bolometric signal was dominant in the quantum Hall transition regime. The photovoltaic effect, which was induced by cyclotron resonance, was observable up to 180 K. The polarity of the photovoltaic photoresponse was shown to be systematically reversed on reversal of the applied magnetic field direction and measurement geometry, suggesting that the photovoltage signals were generated along the quantum Hall edge channel.
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