Effect of oxygen content on the energy level of YBa2Cu3O7-δ superconductors

Huangli Zhang; Xingguo Geng; Jinshan Li; Kehe Su; Rui Hu; Cuiping Zhang; Zhenyi Wen

Effect of oxygen content on the energy level of YBa₂Cu₃O_7-δ superconductors

Huangli Zhang
, Xingguo Geng
, Jinshan Li
, Kehe Su
, Rui Hu
, Cuiping Zhang
, Zhenyi Wen

材料学院

Northwestern Polytechnical University Xian
Northwest Institute for Nonferrous Metal Research
Northwest University China

科研成果: 期刊稿件 › 文章 › 同行评审

摘要

Electronic structures were calculated for a series of YBa₂Cu₃O_7-δ (0 ≤ δ ≤ 1) in different oxygen concentrations by the density function theory (DFT) at BLYP/LanL2MB level by using Gaussian-03 packages. Attentions have been paid especially to the energy level feature near the Fermi level. The results show that the oxygen concentration would greatly influence the energy levels around the highest occupied orbit. When the oxygen concentration increases, the energy level of the highest occupied orbit decreases and the state density increases. This is consistent with the experimental observation of T_c values at different oxygen concentrations.

源语言	英语
页（从-至）	910-912
页数	3
期刊	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
卷	35
期	6
出版状态	已出版 - 6月 2006

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@article{ea74fe645e3d47f291f902e78f77d79a,

title = "Effect of oxygen content on the energy level of YBa2Cu3O7-δ superconductors",

abstract = "Electronic structures were calculated for a series of YBa2Cu3O7-δ (0 ≤ δ ≤ 1) in different oxygen concentrations by the density function theory (DFT) at BLYP/LanL2MB level by using Gaussian-03 packages. Attentions have been paid especially to the energy level feature near the Fermi level. The results show that the oxygen concentration would greatly influence the energy levels around the highest occupied orbit. When the oxygen concentration increases, the energy level of the highest occupied orbit decreases and the state density increases. This is consistent with the experimental observation of Tc values at different oxygen concentrations.",

keywords = "Energy level structures, Oxygen content, YBaCu3O",

author = "Huangli Zhang and Xingguo Geng and Jinshan Li and Kehe Su and Rui Hu and Cuiping Zhang and Zhenyi Wen",

year = "2006",

month = jun,

language = "英语",

volume = "35",

pages = "910--912",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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TY - JOUR

T1 - Effect of oxygen content on the energy level of YBa2Cu3O7-δ superconductors

AU - Zhang, Huangli

AU - Geng, Xingguo

AU - Li, Jinshan

AU - Su, Kehe

AU - Hu, Rui

AU - Zhang, Cuiping

AU - Wen, Zhenyi

PY - 2006/6

Y1 - 2006/6

N2 - Electronic structures were calculated for a series of YBa2Cu3O7-δ (0 ≤ δ ≤ 1) in different oxygen concentrations by the density function theory (DFT) at BLYP/LanL2MB level by using Gaussian-03 packages. Attentions have been paid especially to the energy level feature near the Fermi level. The results show that the oxygen concentration would greatly influence the energy levels around the highest occupied orbit. When the oxygen concentration increases, the energy level of the highest occupied orbit decreases and the state density increases. This is consistent with the experimental observation of Tc values at different oxygen concentrations.

AB - Electronic structures were calculated for a series of YBa2Cu3O7-δ (0 ≤ δ ≤ 1) in different oxygen concentrations by the density function theory (DFT) at BLYP/LanL2MB level by using Gaussian-03 packages. Attentions have been paid especially to the energy level feature near the Fermi level. The results show that the oxygen concentration would greatly influence the energy levels around the highest occupied orbit. When the oxygen concentration increases, the energy level of the highest occupied orbit decreases and the state density increases. This is consistent with the experimental observation of Tc values at different oxygen concentrations.

KW - Energy level structures

KW - Oxygen content

KW - YBaCu3O

UR - https://www.scopus.com/pages/publications/33746537389

M3 - 文章

AN - SCOPUS:33746537389

SN - 1002-185X

VL - 35

SP - 910

EP - 912

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 6

ER -

Effect of oxygen content on the energy level of YBa2Cu3O7-δ superconductors

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Effect of oxygen content on the energy level of YBa₂Cu₃O_7-δ superconductors