Evidence of two-dimensional superconductivity in the single crystalline nanohybrid of organic-bismuth cuprate

Il Won Chung, Soon Jae Kwon, Seung Joo Kim, Eue Soon Jang, Seong Ju Hwang, Jin Ho Choy

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9 Citations (Scopus)


A coordination compound of HgI2(pyridine)2 can be successfully intercalated into a single crystalline Bi2-Sr 2CaCu2Oy, high-Tc superconductor through an interlayer complexation reaction between pyridine molecules and bismuth cuprate pre-intercalated with mercuric iodide. X-ray diffraction and X-ray absorption spectroscopic results clearly demonstrate that the single crystalline nature of the pristine bismuth cuprate remains unchanged even after the intercalation of organic complex as well as those of iodine and mercuric iodide. According to the angle-dependent dc magnetization measurements, the intercalation of bulky organic molecules completely blocks superconductive currents along the c-axis, whereas a superconducting transition along the in-plane direction still occurs in the organic intercalate. In the case of the iodine or mercuric iodide intercalates with smaller lattice expansions, an out-of-plane diamagnetic transition is not wholly quenched but significantly depressed by the intercalation, confirming the reduction of interlayer interaction. The present finding can provide straightforward evidence of the two-dimensionality of high temperature superconductivity in the present cuprate-based nanohybrid material.

Original languageEnglish
Pages (from-to)16197-16200
Number of pages4
JournalJournal of Physical Chemistry B
Issue number33
Publication statusPublished - 2006 Aug 24

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


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