Ju Young Hwang, Youngdo Kim, Changyoung Kim, Ryong Seung Park
언어
한국어(KOR)
URL
https://www.earticle.net/Article/A466920
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초록
영어
When studying the properties of the high-temperature superconductor La2-xSrxCuO4 (LSCO), it is crucial to explore the superconducting phase, and the complex intertwined electronic structural phases. These materials are influenced by the degree of impurities and disorders. Growth methods such as molecular beam epitaxy (MBE) or pulsed laser deposition (PLD) possibly play important roles in reducing impurities or disorders. However, optical measurements including Raman spectroscopy has been limited to study thin film grown by MBE and PLD despite its wide applicability in strongly correlated materials. In this study, we utilized optimally doped LSCO (x=0.15) thin films grown by PLD to conduct electronic Raman scattering. Comparing these results with bulk LSCO (x=0.15), we observed clear differences from that of bulk samples. The phonon near 225 cm⁻¹ in the B1g Raman spectrum did not split and appeared as a single peak, and the two-magnon emerged in an energy range that had not been previously reported. These results indicate better crystal quality of PLD grown LSCO (x=0.15) which shows possible Two-magnon.
목차
Abstract 1. 서론 2. 실험 3. 결과 및 논의 4. 결론 ACKNOWLEDGMENT REFERENCES
Ju Young Hwang [ Department of Physics, Incheon National University, Incheon 22012, Republic of Korea ]
Youngdo Kim [ Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea/Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Republic of Korea ]
Changyoung Kim [ Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea/Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Republic of Korea ]
Ryong Seung Park [ Department of Physics, Incheon National University, Incheon 22012, Republic of Korea ]
Corresponding Author