Signatures of pressure-induced superconductivity in insulating Bi 1.98 Sr 2.06 Y 0.68 CaCu 2 O 8 + d
Signatures of pressure-induced superconductivity in insulating Bi 1.98 Sr 2.06 Y 0.68 CaCu 2 O 8 + d
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绝缘Bi 1.98 Sr 2.06 Y 0.68 CaCu 2 O 8 d中压力诱导超导特征
DOI：
10.1103/physrevb.81.184509
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发表时间：
2010
影响因子：
3.7
通讯作者：
Cuk T
中科院分区：
文献类型：
--
作者：
Cuk T
我们对高Bi2212系列铜氧化物超导体的绝缘母体化合物(Bi2212)进行了多次高压电阻实验。我们发现了一个电阻异常，在低温下下降，它开始与外加压力在20-40千巴范围内。通过电阻和磁阻测量，我们发现这种反常现象是诱导超导电性的特征。对较高压力的抵抗力降低，最大值为。较高的压力测量对压力环境的流体静力学具有很强的敏感性。我们与目前普遍存在于砷化铁中的压力诱导超导电性进行了比较。
We have performed several high-pressure electrical resistance experiments on(Bi2212), an insulating parent compound of the high-Bi2212 family of copper oxide superconductors. We find a resistive anomaly, a downturn at low temperature, that onsets with applied pressure in the 20–40 kbar range. Through both resistance and magnetoresistance measurements, we identify this anomaly as a signature of induced superconductivity. Resistance to higher pressures decreases, giving a maximum of. The higher pressure measurements exhibit a strong sensitivity to the hydrostaticity of the pressure environment. We make comparisons to the pressure-induced superconductivity now ubiquitous in the iron arsenides.