Earticle

초록

영어

We performed angle-resolved Raman spectroscopy experiments on lead-doped and undoped Bi2Sr2CaCu2O8+δ(Bi2212) samples using a 660 nm laser and analyzed the Raman tensor of the phonon modes. The phonon mode was clearly observed at the 60, 103, and 630 cm-1 Raman shifts. The 60, 630 cm-1 peaks were only clearly observed when the incident and scattered light polarizations were configured to be parallel. The polarization angle dependence of the amplitude of the 60, 630 cm-1 peak on the parallel configuration shows a twofold symmetry; therefore, both peaks originate from Ag phonons and the crystal structure of Bi2212 should be considered orthorhombic. On the other hand, the 103 cm-1 peak is clearly observed in both parallel and perpendicular configurations. Remarkably, the off-diagonal component of the Raman tensor of the 103 cm-1 peak showed an anti-symmetry that could not be realized within the known crystal structure of Bi2212. The implications of our findings are discussed.

목차

Abstract
1. 서론
2. 실험
3. 결과 및 논의
4. 결론
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• Ji Yoon Hwang [ Department of Physics, Incheon National University, Incheon 22012, Republic of Korea ]
• Sae Gyeol Jung [ Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea ]
• Dong Joon Song [ Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea, Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z4 ]
• Changyoung Kim [ Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea, Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z4 ]
• Seung Ryong Park [ Department of Physics, Incheon National University, Incheon 22012, Republic of Korea ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537