Magnetic dimensional crossover in Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ

H. C. Ku; C. Y. Lin; Y. Y. Hsu; X. G. Li; X. F. Sun

doi:10.1016/S0921-4526(98)00838-2

Magnetic dimensional crossover in Pr-doped single crystal Bi₂Sr₂Ca_0.89Pr_0.11Cu ₂O_8+δ

H. C. Ku^*, C. Y. Lin, Y. Y. Hsu, X. G. Li, X. F. Sun

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

Magnetic hysteresis measurements on Pr-doped single crystal Bi₂Sr₂Ca_0.89Pr_0.11Cu ₂O_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 CuO₂ 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 Bi₂Sr₂CaCu₂O_8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO₂ bi-layers can be reduced by the presence of Pr.

Original language	English
Pages (from-to)	550-551
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	259-261
DOIs	https://doi.org/10.1016/S0921-4526(98)00838-2
Publication status	Published - 1999
Externally published	Yes

Keywords

Dimensional crossover
Flux dynamics
Superconductivity

ASJC Scopus subject areas

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

Access to Document

10.1016/S0921-4526(98)00838-2

Cite this

@article{c650795fa5c1458e808748a888925b28,

title = "Magnetic dimensional crossover in Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ",

abstract = "Magnetic hysteresis measurements on Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H2D 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 Pr3- ions for Ca2- ions effectively decreases the hole concentration on the CuO2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature Tc. of 88 K. The lower crossover field H2D values of the Pr-doped sample as compared with the undoped Bi2Sr2CaCu2O8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO2 bi-layers can be reduced by the presence of Pr.",

keywords = "Dimensional crossover, Flux dynamics, Superconductivity",

author = "Ku, {H. C.} and Lin, {C. Y.} and Hsu, {Y. Y.} and Li, {X. G.} and Sun, {X. F.}",

note = "Funding Information: This work was supported by NSC-87-2112-M007-007 and -025.",

year = "1999",

doi = "10.1016/S0921-4526(98)00838-2",

language = "English",

volume = "259-261",

pages = "550--551",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Magnetic dimensional crossover in Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ

AU - Ku, H. C.

AU - Lin, C. Y.

AU - Hsu, Y. Y.

AU - Li, X. G.

AU - Sun, X. F.

N1 - Funding Information: This work was supported by NSC-87-2112-M007-007 and -025.

PY - 1999

Y1 - 1999

N2 - Magnetic hysteresis measurements on Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H2D 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 Pr3- ions for Ca2- ions effectively decreases the hole concentration on the CuO2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature Tc. of 88 K. The lower crossover field H2D values of the Pr-doped sample as compared with the undoped Bi2Sr2CaCu2O8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO2 bi-layers can be reduced by the presence of Pr.

AB - Magnetic hysteresis measurements on Pr-doped single crystal Bi2Sr2Ca0.89Pr0.11Cu 2O8+δ show a dimensional crossover from the three-dimensional (3D) vortex glass to the two-dimensional (2D) pancake of vortices. The observed crossover field H2D 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 Pr3- ions for Ca2- ions effectively decreases the hole concentration on the CuO2 bi-layers but pushes the superconducting state from the overdoped region to the optimum composition with a superconducting transition temperature Tc. of 88 K. The lower crossover field H2D values of the Pr-doped sample as compared with the undoped Bi2Sr2CaCu2O8+δ imply that the Josephson coupling between the two superconducting regions of adjacent CuO2 bi-layers can be reduced by the presence of Pr.

KW - Dimensional crossover

KW - Flux dynamics

KW - Superconductivity

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