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

Tetsuya Iye; Takenori Nagatochi; Ryusuke Ikeda; Azusa Matsuda

doi:10.1143/JPSJ.79.114711

Diamagnetism above T_c in Underdoped Bi_2,2Sr _1.8Ca₂Cu₃O_10+δ

Tetsuya Iye^*, Takenori Nagatochi, Ryusuke Ikeda, Azusa Matsuda

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Single crystals of Bi_2,2Sr_1.8Ca₂Cu ₃O_10+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 χ_ab (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 language	English
Article number	114711
Journal	journal of the physical society of japan
Volume	79
Issue number	11
DOIs	https://doi.org/10.1143/JPSJ.79.114711
Publication status	Published - 2010 Nov
Externally published	Yes

Keywords

Bi2223
Dimensionality
High-T cuprate
Normal state susceptibility
Single crystal

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.79.114711

Cite this

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

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.",

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T1 - Diamagnetism above Tc in Underdoped Bi2,2Sr 1.8Ca2Cu3O10+δ

AU - Iye, Tetsuya

AU - Nagatochi, Takenori

AU - Ikeda, Ryusuke

AU - Matsuda, Azusa

PY - 2010/11

Y1 - 2010/11

N2 - 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.

AB - 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.

KW - Bi2223

KW - Dimensionality

KW - High-T cuprate

KW - Normal state susceptibility

KW - Single crystal

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