Magnetic dimensional crossover in Pr-doped single crystal Bi 2 Sr 2 Ca 0.89 Pr 0.11 Cu 2 O 8+δ

H. C. Ku, C. Y. Lin, Yung-Yuan Hsu, X. G. Li, X. F. Sun

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Magnetic hysteresis measurements on Pr-doped single crystal Bi 2 Sr 2 Ca 0.89 Pr 0.11 Cu 2 O 8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H 2D for field applied parallel to the c-axis decreases from 6 kG at 5 K to 410 G at 25 K and 120 G at 45 K. The substitution of 11% of magnetic Pr 3- ions for Ca 2- ions effectively decreases the hole concentration on the CuO 2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature T c . of 88 K. The lower crossover field H 2D values of the Pr-doped sample as compared with the undoped Bi 2 Sr 2 CaCu 2 O 8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO 2 bi-layers can be reduced by the presence of Pr.

Original languageEnglish
Pages (from-to)550-551
Number of pages2
JournalPhysica B: Condensed Matter
Volume259-261
DOIs
Publication statusPublished - 1999 Jan 1

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doped crystals
crossovers
Vortex flow
Single crystals
Ions
Magnetic hysteresis
Hole concentration
single crystals
vortices
Superconducting transition temperature
Substitution reactions
Glass
ions
Chemical analysis
transition temperature
hysteresis
substitutes
glass

Keywords

  • Dimensional crossover
  • Flux dynamics
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Magnetic dimensional crossover in Pr-doped single crystal Bi 2 Sr 2 Ca 0.89 Pr 0.11 Cu 2 O 8+δ . / Ku, H. C.; Lin, C. Y.; Hsu, Yung-Yuan; Li, X. G.; Sun, X. F.

In: Physica B: Condensed Matter, Vol. 259-261, 01.01.1999, p. 550-551.

Research output: Contribution to journalArticle

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abstract = "Magnetic hysteresis measurements on Pr-doped single crystal Bi 2 Sr 2 Ca 0.89 Pr 0.11 Cu 2 O 8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H 2D for field applied parallel to the c-axis decreases from 6 kG at 5 K to 410 G at 25 K and 120 G at 45 K. The substitution of 11{\%} of magnetic Pr 3- ions for Ca 2- ions effectively decreases the hole concentration on the CuO 2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature T c . of 88 K. The lower crossover field H 2D values of the Pr-doped sample as compared with the undoped Bi 2 Sr 2 CaCu 2 O 8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO 2 bi-layers can be reduced by the presence of Pr.",
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T1 - Magnetic dimensional crossover in Pr-doped single crystal Bi 2 Sr 2 Ca 0.89 Pr 0.11 Cu 2 O 8+δ

AU - Ku, H. C.

AU - Lin, C. Y.

AU - Hsu, Yung-Yuan

AU - Li, X. G.

AU - Sun, X. F.

PY - 1999/1/1

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N2 - Magnetic hysteresis measurements on Pr-doped single crystal Bi 2 Sr 2 Ca 0.89 Pr 0.11 Cu 2 O 8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H 2D for field applied parallel to the c-axis decreases from 6 kG at 5 K to 410 G at 25 K and 120 G at 45 K. The substitution of 11% of magnetic Pr 3- ions for Ca 2- ions effectively decreases the hole concentration on the CuO 2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature T c . of 88 K. The lower crossover field H 2D values of the Pr-doped sample as compared with the undoped Bi 2 Sr 2 CaCu 2 O 8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO 2 bi-layers can be reduced by the presence of Pr.

AB - Magnetic hysteresis measurements on Pr-doped single crystal Bi 2 Sr 2 Ca 0.89 Pr 0.11 Cu 2 O 8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H 2D for field applied parallel to the c-axis decreases from 6 kG at 5 K to 410 G at 25 K and 120 G at 45 K. The substitution of 11% of magnetic Pr 3- ions for Ca 2- ions effectively decreases the hole concentration on the CuO 2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature T c . of 88 K. The lower crossover field H 2D values of the Pr-doped sample as compared with the undoped Bi 2 Sr 2 CaCu 2 O 8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO 2 bi-layers can be reduced by the presence of Pr.

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