원문정보
초록
영어
High-TC superconductivity (HTSC) has been the central issue in the field of condensed matter physics for decades. An essential part of the research on superconductivity is finding new exotic superconductors. It was recently suggested that Ir-substituted La0.7Sr0.3MnO3 (LSMIO) is a new high-TC superconductor. However, systematic studies to experimentally verify the superconductivity have not been done. Here, we report the growth processes of LSMIO thin films and their electrical transport properties. We observed a clear negative correlation between the intensity of the laser utilized for film deposition and the Curie temperature of the deposited film. We attributed this effect to the suppression of Sr concentration in the LSMIO films as the laser intensity increased. However, our LSMIO films show conventional ferromagnetism instead of HTSC. To realize the HTSC in LSMIO systems, further exploration of diverse compositions of LSMIO compounds is essential.
목차
1. INTRODUCTION
2. EXPERIMENTAL
2.1. 결정 구조
2.2. 세라믹 타겟 합성
2.3. 박막 성장
2.4. 전기 전도도 측정
3. SUMMARY
ACKNOWLEDGMENT
REFERENCES