High-Tc Superconductors in the Two-Dimensional Limit: [(Py-CnH2n+1)2HgI4]-Bi2Sr2Cam
1CumOy (m = 1 and 2)
Jin-Ho Choy,
*
Soon-Jae Kwon,
Gyeong-Su Park
The free modulation of interlayer distance in a layered
high-transition temperature (high-Tc)
superconductor is of crucial importance not only for the study of the
superconducting mechanism but also for the practical application of
high-Tc superconducting materials.
Two-dimensional (2D) superconductors were achieved by intercalating a
long-chain organic compound into bismuth-based high-Tc 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-Tc
superconductivity.
Jin-Ho Choy and Soon-Jae Kwon, Department of Chemistry, Center for
Molecular Catalysis, College of Natural Sciences, Seoul National
University, Seoul 151-742, Korea.
Gyeong-Su Park, Samsung Advanced Institute of Technology, Post Office
Box 111, Suwon 440-660, Korea.
*
To whom correspondence should be addressed. E-mail:
jhchoy{at}plaza.snu.ac.kr
