INSULATOR TO SUPERCONDUCTOR TRANSITION OF Pb DOPED 2201 SINGLE CRYSTAL IN Bi-SYSTEM BY OXYGEN DEFICIENCY
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Abstract
Flux method was used to grow large 2201 single crystal in Bi-Sr-Cu oxide. The as-grown crystal was nonsuperconductor and showed semiconductivity in resistivity curve. After it was reduced in flowing N2 at 570°C and appropriate oxygen vacancies were induced, superconductivity with Tonc=6K was obtained. The great influence of oxygen deficience on superconductivity is evident. Also, the incorporation of Pb adjusted the modulation pattern.
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LIU Yongqian, HUANG Yuzhen, CHEN Liquan, CHEN Hong, LI Jianqi, NI Yongming, JIA Shunlian, ZHAO Zhongxian. INSULATOR TO SUPERCONDUCTOR TRANSITION OF Pb DOPED 2201 SINGLE CRYSTAL IN Bi-SYSTEM BY OXYGEN DEFICIENCY[J]. Chin. Phys. Lett., 1990, 7(11): 526-528.
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LIU Yongqian, HUANG Yuzhen, CHEN Liquan, CHEN Hong, LI Jianqi, NI Yongming, JIA Shunlian, ZHAO Zhongxian. INSULATOR TO SUPERCONDUCTOR TRANSITION OF Pb DOPED 2201 SINGLE CRYSTAL IN Bi-SYSTEM BY OXYGEN DEFICIENCY[J]. Chin. Phys. Lett., 1990, 7(11): 526-528.
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LIU Yongqian, HUANG Yuzhen, CHEN Liquan, CHEN Hong, LI Jianqi, NI Yongming, JIA Shunlian, ZHAO Zhongxian. INSULATOR TO SUPERCONDUCTOR TRANSITION OF Pb DOPED 2201 SINGLE CRYSTAL IN Bi-SYSTEM BY OXYGEN DEFICIENCY[J]. Chin. Phys. Lett., 1990, 7(11): 526-528.
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LIU Yongqian, HUANG Yuzhen, CHEN Liquan, CHEN Hong, LI Jianqi, NI Yongming, JIA Shunlian, ZHAO Zhongxian. INSULATOR TO SUPERCONDUCTOR TRANSITION OF Pb DOPED 2201 SINGLE CRYSTAL IN Bi-SYSTEM BY OXYGEN DEFICIENCY[J]. Chin. Phys. Lett., 1990, 7(11): 526-528.
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