| Bi2Sr2CaCu2O8超导单晶中的电阻反常行为 |
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| 引用本文： | 王文虎,周玉琴,郑萍,陈兆甲,王楠林,王玉鹏.Bi2Sr2CaCu2O8超导单晶中的电阻反常行为[J].物理学报,2000,49(10). |
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| 作者姓名： | 王文虎 周玉琴 郑萍 陈兆甲 王楠林 王玉鹏 |
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| 作者单位： | 中国科学院物理研究所凝聚态物理中心,北京,100080 |
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| 摘 要： | 测量了Bi2 Sr2 CaCu2 O8单晶的ab面和c轴方向电阻 ,在其超导转变温度附近发现了反常的电阻峰出现 .其随外磁场 (>10 0Gs)和电流的增加而逐渐消失 .文章认为这个反常的电阻峰是由于单晶中超导相的不均匀分布而导致的准再进入行为 .
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| 关 键 词： | Bi_2Sr_2CaCu_2O_8单晶 反常电阻峰 准再入行为 |
RESISTANCE ANOMALY IN SUPERCONDUCTING Bi2Sr2CaCu2O8 SINGLE CRYSTALS |
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| WANG WEN-HU,ZHOU YU-QIN,ZHENG PING,CHEN ZHAO-JIA,WANG NAN-LIN,WANG YU-PENG.RESISTANCE ANOMALY IN SUPERCONDUCTING Bi2Sr2CaCu2O8 SINGLE CRYSTALS[J].Acta Physica Sinica,2000,49(10). |
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| Authors: | WANG WEN-HU ZHOU YU-QIN ZHENG PING CHEN ZHAO-JIA WANG NAN-LIN WANG YU-PENG |
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| Abstract: | We have measured the resistance of some Bi\-2Sr\-2CaCu\-2O\-8 superconducting single crystals along ab plane and the c axis. In some single crystals, a remarkable resistivity anomaly near the superconducting transition temperature is observed in the ab plane. The peak is suppressed and vanishes gradually with increasing applied magnetic field (>100?Gs) or transport current. We proposed that the resistance peak is a quasi\|reentrant behavior due to the inhomogeneous distribution of the superconducting phase. |
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| Keywords: | Bi\-2Sr\-2CaCu\-2O\-8 resistivity anomaly quasi\|reentrant behavior |
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