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Zeitschrift für Naturforschung A

A Journal of Physical Sciences

Editor-in-Chief: Holthaus, Martin

Editorial Board: Fetecau, Corina / Kiefer, Claus

12 Issues per year


IMPACT FACTOR 2016: 1.432

CiteScore 2017: 1.30

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1865-7109
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Volume 68, Issue 6-7

Issues

Theoretical Investigations of the Knight Shifts and the Hyperfine Structure Constants for the Tetragonal Cu2+ Sites in the Bismuth- and Thallium-Based High-Tc Superconductors

Min-Quan Kuang
  • Corresponding author
  • School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
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/ Shao-Yi Wu
  • School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
  • International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, P. R. China
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Xian-Fen Hu
  • School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Bo-Tao Song
  • School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2014-06-02 | DOI: https://doi.org/10.5560/zna.2013-0019

The Knight shifts and hyperfine structure constants for the tetragonal Cu2+ sites in bismuth- and thallium-based high-Tc uperconductors ( Bi1:6Pb0:4Sr2Ca2Cu3O10, TlSr2CaCu2O7-y, and Tl2Ba2CuOy) are theoretically investigated from the high-order perturbation formulas of these parameters for a 3d9 ion under tetragonally elongated octahedra in a unified way. The calculation results show good agreement with the observed values. The significant anisotropies of the Knight shifts are attributed to the local tetragonal elongation distortions of the five-(or six-)coordinated Cu2+ sites in these systems. The present studies would be beneficial to establish a complete physical scheme for unified understandings of electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) spectral behaviours of Cu2+ (or other similar 3d9 ions) in the high-Tc superconductors.

Keywords: Knight Shifts; Hyperfine Structure Constants; 63Cu2+; Bi1:6Pb0:4Sr2Ca2Cu3O10; TlSr2CaCu2O7-y; Tl2Ba2CuOy

About the article

Received: 2012-12-03

Revised: 2013-02-04

Published Online: 2014-06-02

Published in Print: 2013-07-01


Citation Information: Zeitschrift für Naturforschung A, Volume 68, Issue 6-7, Pages 442–446, ISSN (Online) 1865-7109, ISSN (Print) 0932-0784, DOI: https://doi.org/10.5560/zna.2013-0019.

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