Combined effect of charge carriers and crystal structure on high-Tc superconductivity in codoped Y1-xCaxBa2-yLayCu3Oz

Sijie Hao; Wentao Jin; Han Zhang

doi:10.1016/j.physc.2022.1354122

Combined effect of charge carriers and crystal structure on high-T_c superconductivity in codoped Y_1-_xCa_xBa_2-_yLa_yCu₃O_z

Sijie Hao
, Wentao Jin^*
, Han Zhang

^*Corresponding author for this work

School of Physics

Beijing Normal University
Peking University

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

2 Scopus citations

Abstract

Polycrystalline samples of Y_1-_xCa_xBa_2-_yLa_yCu₃O_z cuprate superconductors with both x and y ranging from 0 to 0.5 were investigated. The combinative energy between the perovskite block and the rock-salt block in this codoped system was calculated according to a previously proposed “block model”. By defining a new parameter γ describing the combined effects of the combinative energy (lattice degree of freedom) and the charge carrier density (charge degree of freedom), it is revealed that the tendency of γ changing with doping is well consistent with that of the superconducting transition temperature (T_c) over the whole doping range, suggesting the important roles of both the lattice and charge degrees of freedom in influencing the unconventional superconductivity.

Original language	English
Article number	1354122
Journal	Physica C: Superconductivity and its Applications
Volume	601
DOIs	https://doi.org/10.1016/j.physc.2022.1354122
State	Published - 15 Oct 2022

Keywords

Charge carrier concentration
Codoping effect
Combinative energy
High-T superconductivity

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title = "Combined effect of charge carriers and crystal structure on high-Tc superconductivity in codoped Y1-xCaxBa2-yLayCu3Oz",

abstract = "Polycrystalline samples of Y1-xCaxBa2-yLayCu3Oz cuprate superconductors with both x and y ranging from 0 to 0.5 were investigated. The combinative energy between the perovskite block and the rock-salt block in this codoped system was calculated according to a previously proposed “block model”. By defining a new parameter γ describing the combined effects of the combinative energy (lattice degree of freedom) and the charge carrier density (charge degree of freedom), it is revealed that the tendency of γ changing with doping is well consistent with that of the superconducting transition temperature (Tc) over the whole doping range, suggesting the important roles of both the lattice and charge degrees of freedom in influencing the unconventional superconductivity.",

keywords = "Charge carrier concentration, Codoping effect, Combinative energy, High-T superconductivity",

author = "Sijie Hao and Wentao Jin and Han Zhang",

note = "Publisher Copyright: {\textcopyright} 2022",

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doi = "10.1016/j.physc.2022.1354122",

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T1 - Combined effect of charge carriers and crystal structure on high-Tc superconductivity in codoped Y1-xCaxBa2-yLayCu3Oz

AU - Hao, Sijie

AU - Jin, Wentao

AU - Zhang, Han

PY - 2022/10/15

Y1 - 2022/10/15

N2 - Polycrystalline samples of Y1-xCaxBa2-yLayCu3Oz cuprate superconductors with both x and y ranging from 0 to 0.5 were investigated. The combinative energy between the perovskite block and the rock-salt block in this codoped system was calculated according to a previously proposed “block model”. By defining a new parameter γ describing the combined effects of the combinative energy (lattice degree of freedom) and the charge carrier density (charge degree of freedom), it is revealed that the tendency of γ changing with doping is well consistent with that of the superconducting transition temperature (Tc) over the whole doping range, suggesting the important roles of both the lattice and charge degrees of freedom in influencing the unconventional superconductivity.

AB - Polycrystalline samples of Y1-xCaxBa2-yLayCu3Oz cuprate superconductors with both x and y ranging from 0 to 0.5 were investigated. The combinative energy between the perovskite block and the rock-salt block in this codoped system was calculated according to a previously proposed “block model”. By defining a new parameter γ describing the combined effects of the combinative energy (lattice degree of freedom) and the charge carrier density (charge degree of freedom), it is revealed that the tendency of γ changing with doping is well consistent with that of the superconducting transition temperature (Tc) over the whole doping range, suggesting the important roles of both the lattice and charge degrees of freedom in influencing the unconventional superconductivity.

KW - Charge carrier concentration

KW - Codoping effect

KW - Combinative energy

KW - High-T superconductivity

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DO - 10.1016/j.physc.2022.1354122

M3 - 文章

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SN - 0921-4534

VL - 601

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

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ER -

Combined effect of charge carriers and crystal structure on high-T_c superconductivity in codoped Y_1-_xCa_xBa_2-_yLa_yCu₃O_z

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