中国物理B ›› 2013, Vol. 22 ›› Issue (5): 57402-057402.doi: 10.1088/1674-1056/22/5/057402
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
王培, 解伟, 胡磊, 刘欣, 赵新杰, 何明, 季鲁, 张旭, 阎少林
Wang Pei (王培), Xie Wei (解伟), Hu Lei (胡磊), Liu Xin (刘欣), Zhao Xin-Jie (赵新杰), He Ming (何明), Ji Lu (季鲁), Zhang Xu (张旭), Yan Shao-Lin (阎少林)
摘要: Intrinsic Josephson junctions in misaligned Tl2Ba2CaCu2O8 thin film were fabricated on LaAlO3 substrate. The temperature dependence of the critical current is investigated around liquid nitrogen temperature. In the current voltage characteristic, large voltage jump and free of resistive branch are observed, which shows good consistency with the intrinsic Josephson junctions. By analyzing the large gap voltage in the curve, great suppression of the energy gap is found. Through discussing the temperature dependence of the gap voltage in liquid nitrogen temperature, it is showed that this phenomenon can be caused by the nonequilibrium quasiparticle injection. The temperature influence on the excess current also confirms the nonequlibrium effect.
中图分类号: (Cuprate superconductors)