The voltage-biased current-voltage （I-V） characteristics of intrinsic Josephson junctions （IJJs）, which are fabricated with misa- ligned high temperature superconducting Tl2Ba2CaCu2O8 （T1-2212） thin film, are in...The voltage-biased current-voltage （I-V） characteristics of intrinsic Josephson junctions （IJJs）, which are fabricated with misa- ligned high temperature superconducting Tl2Ba2CaCu2O8 （T1-2212） thin film, are investigated experimentally. Three charac- teristic regions in the I-V curve are observed at 47 K. In the low voltage part, the current firstly increases and then decreases slowly with increasing the biased voltage, which is shown as a bump. In the next region, the current slightly increases with in- creasing the biased voltage until a sudden decrease of the current appears. Thereafter, branch structure forms with increasing the voltage on the I-V characteristic. The influence of the self-heating on the I-V characteristics is investigated and the temper- ature dependence of the I-V characteristics is measured to explore these characteristics in detail.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.61176119,61171028,51002081 and 61101018)
文摘The voltage-biased current-voltage （I-V） characteristics of intrinsic Josephson junctions （IJJs）, which are fabricated with misa- ligned high temperature superconducting Tl2Ba2CaCu2O8 （T1-2212） thin film, are investigated experimentally. Three charac- teristic regions in the I-V curve are observed at 47 K. In the low voltage part, the current firstly increases and then decreases slowly with increasing the biased voltage, which is shown as a bump. In the next region, the current slightly increases with in- creasing the biased voltage until a sudden decrease of the current appears. Thereafter, branch structure forms with increasing the voltage on the I-V characteristic. The influence of the self-heating on the I-V characteristics is investigated and the temper- ature dependence of the I-V characteristics is measured to explore these characteristics in detail.
