Earticle

초록

영어

Electron-doped cuprates have mainly been studied in the T′ structure because chemical electron doping tends to destabilize the T phase. Here, we realize electron-doped T-phase La2CuO4 (LCO) monolayers using polar discontinuity at oxide interfaces. Charging-free LCO/LAO/LSCO heterostructures were fabricated by pulsed laser deposition and studied by ARPES. The LCO monolayer exhibits a clear Fermi surface, unlike insulating bulk-like LCO, indicating successful electron doping. Tight-binding analysis shows that the electron doping level increases with LAO buffer-layer thickness, consistent with charge redistribution driven by polar discontinuity. However, thicker LAO layers also degrade the ARPES spectral quality, suggesting additional compensation mechanisms such as surface reconstruction. These results demonstrate polar discontinuity as a promising route to electron-doped T-phase cuprates.

목차

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

키워드

저자

• Sehoon Kim [ Seoul National University, Seoul, Korea ]
• Youngdo Kim [ Yale University, New Haven, USA ]
• Changyoung Kim [ Seoul National University, Seoul, 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