Diamagnetism above Tc in Underdoped Bi2,2Sr 1.8Ca2Cu3O10+δ

Tetsuya Iye, Takenori Nagatochi, Ryusuke Ikeda, Azusa Matsuda

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3 Citations (Scopus)

Abstract

Single crystals of Bi2,2Sr1.8Ca2Cu 3O10+δ (Bi2223) with x = 0.2 were grown by a traveling solvent floating zone method in order to investigate the superconducting properties of highly underdoped Bi2223. Grown crystals were characterized by X-ray diffraction, DC susceptibility and resistivity measurements, confirming Bi2223 to be the main phase. The crystals were annealed under various oxygen partial pressures to adjust their carrier densities from optimally doped to highly underdoped. The fluctuation diamagnetic component above the superconducting transition temperature Tc extracted from the anisotropic normal state susceptibilities χab (T) (H ⊥ c) and χc(T) (H ∥ c) was found to increase with underdoping, suggesting a decrease in the superconducting dimensionality and/or increase in the fluctuating vortex liquid region.

Original languageEnglish
Article number114711
Journaljournal of the physical society of japan
Volume79
Issue number11
DOIs
Publication statusPublished - 2010 Nov 1

Keywords

  • Bi2223
  • Dimensionality
  • High-T cuprate
  • Normal state susceptibility
  • Single crystal

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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