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

School of Materials Sience and Engineering

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

Abstract

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.

Original language	English
Pages (from-to)	910-912
Number of pages	3
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	35
Issue number	6
State	Published - Jun 2006

Keywords

Energy level structures
Oxygen content
YBaCu3O

Cite this

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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",

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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 - http://www.scopus.com/inward/record.url?scp=33746537389&partnerID=8YFLogxK

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 YBa₂Cu₃O_7-δ superconductors

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