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Phonon Hardening due to Photo-excited Carriers in Graphene
- Yoon, Duhee;
- Moon, Hyerim;
- Woo, Seoungwoo;
- Cheong, Hyeonsik;
- Son, Young-Woo
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1초록
We observed the hardening of E-2g phonons due to photoexcited carriers in Raman spectroscopic measurements of graphene. As the excitation laser intensity is increased, the Raman G band of graphene blushifts and becomes narrower. This shift and line-narrowing is interpreted in terms of the Kohn anomaly suppression due to photoexcited carriers.
키워드
Graphene; Raman spectroscopy; Phonon; Photo carrier
- 제목
- Phonon Hardening due to Photo-excited Carriers in Graphene
- 저자
- Yoon, Duhee; Moon, Hyerim; Woo, Seoungwoo; Cheong, Hyeonsik; Son, Young-Woo
- 발행일
- 2011
- 유형
- Proceedings Paper
- 저널명
- AIP Conference Proceedings
- 권
- 1399