Crossover of pinning mechanism in La 1.85Sr 0.15CuO 4 crystals

Y. Bruckental; B. Kalisky; A. Shaulov; Y. Yeshurun

doi:10.1063/1.1853171

Crossover of pinning mechanism in La _1.85Sr _0.15CuO ₄ crystals

Y. Bruckental, B. Kalisky, A. Shaulov, Y. Yeshurun

Department of Physics

Bar-Ilan University

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

Abstract

The pinning mechanism in La1.85 Sr0.15 Cu O4 (LaSCO) was investigated by analyzing the critical current dependence on field and temperature. Unlike other high temperature superconductors such as Y Ba2 Cu3 O7, Dy Ba2 Cu3 O7-δ, and Nd1.85 Ce0.15 Cu O4-δ, which exhibit a single pinning mechanism over wide temperature and magnetic field ranges, our data in LaSCO show a clear crossover from δl to δ Tc pinning with temperature or field. While δl pinning is effective at low fields or low temperatures, δ Tc pinning dominates at high fields or high temperatures. Implications of the pinning mechanism crossover on the unique behavior of the second magnetization peak in LaSCO are discussed.

Original language	English
Article number	10B109
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1853171
State	Published - 15 May 2005

Bibliographical note

Funding Information:
A.S. acknowledges support from the German–Israel Foundation (GIF). Y.Y. acknowledges support from the Wolfson Foundation. This research is supported by the ISF Centerof Excellence Program and the Heinrich Hertz Minerva Center for High Temperature Superconductivity.

Funding

A.S. acknowledges support from the German–Israel Foundation (GIF). Y.Y. acknowledges support from the Wolfson Foundation. This research is supported by the ISF Centerof Excellence Program and the Heinrich Hertz Minerva Center for High Temperature Superconductivity.

Funders	Funder number
German–Israel Foundation
Heinrich Hertz Minerva Center
ISF Centerof Excellence Program
Wolfson Foundation

Access to Document

10.1063/1.1853171

Cite this

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title = "Crossover of pinning mechanism in La 1.85Sr 0.15CuO 4 crystals",

abstract = "The pinning mechanism in La1.85 Sr0.15 Cu O4 (LaSCO) was investigated by analyzing the critical current dependence on field and temperature. Unlike other high temperature superconductors such as Y Ba2 Cu3 O7, Dy Ba2 Cu3 O7-δ, and Nd1.85 Ce0.15 Cu O4-δ, which exhibit a single pinning mechanism over wide temperature and magnetic field ranges, our data in LaSCO show a clear crossover from δl to δ Tc pinning with temperature or field. While δl pinning is effective at low fields or low temperatures, δ Tc pinning dominates at high fields or high temperatures. Implications of the pinning mechanism crossover on the unique behavior of the second magnetization peak in LaSCO are discussed.",

author = "Y. Bruckental and B. Kalisky and A. Shaulov and Y. Yeshurun",

note = "Funding Information: A.S. acknowledges support from the German–Israel Foundation (GIF). Y.Y. acknowledges support from the Wolfson Foundation. This research is supported by the ISF Centerof Excellence Program and the Heinrich Hertz Minerva Center for High Temperature Superconductivity.",

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AU - Yeshurun, Y.

N1 - Funding Information: A.S. acknowledges support from the German–Israel Foundation (GIF). Y.Y. acknowledges support from the Wolfson Foundation. This research is supported by the ISF Centerof Excellence Program and the Heinrich Hertz Minerva Center for High Temperature Superconductivity.

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N2 - The pinning mechanism in La1.85 Sr0.15 Cu O4 (LaSCO) was investigated by analyzing the critical current dependence on field and temperature. Unlike other high temperature superconductors such as Y Ba2 Cu3 O7, Dy Ba2 Cu3 O7-δ, and Nd1.85 Ce0.15 Cu O4-δ, which exhibit a single pinning mechanism over wide temperature and magnetic field ranges, our data in LaSCO show a clear crossover from δl to δ Tc pinning with temperature or field. While δl pinning is effective at low fields or low temperatures, δ Tc pinning dominates at high fields or high temperatures. Implications of the pinning mechanism crossover on the unique behavior of the second magnetization peak in LaSCO are discussed.

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