High-Tc superconductors in the two-dimensional limit:: [(Py-CnH2n+1)2HgI4]-Bi2Sr2Cam-1CumOy (m=1 and 2)

被引:145
作者
Choy, JH [1 ]
Kwon, SJ
Park, GS
机构
[1] Seoul Natl Univ, Coll Nat Sci, Dept Chem, Ctr Mol Catalysis, Seoul 151742, South Korea
[2] Samsung Adv Inst Technol, Suwon 440660, South Korea
关键词
D O I
10.1126/science.280.5369.1589
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The free modulation of interlayer distance in a layered high-transition temperature (high-T-c) superconductor is of crucial importance not only for the study of the superconducting mechanism but also for the practical application of high-T-c superconducting materials. Two-dimensional (2D) superconductors were achieved by intercalating a long-chain organic compound into bismuth-based high-T-c cuprates. Although the intercalation of the organic chain increased the interlayer distance remarkably, to tens of angstroms, the superconducting transition temperature of the intercalate was nearly the same as that of the pristine material, suggesting the 2D nature of the high-T-c superconductivity.
引用
收藏
页码:1589 / 1592
页数:4
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