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

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	Theoretical Investigations of the Knight Shifts and the Hyperfine Structure Constants for the Tetragonal Cu2+ Sites in the Bismuth- and Thallium-Based High-T-c Superconductors
	M. Q. Kuang; S. Y. Wu; X. F. Hu; B. T. Song
	2013
发表期刊	Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
ISSN	0932-0784
卷号	68 期号:6-7 页码:442-446
摘要	The Knight shifts and hyperfine structure constants for the tetragonal Cu2+ sites in bismuth-and thallium-based high-T-c superconductors (Bi1.6Pb0.4Sr2Ca2Cu3O10, TlSr2CaCu2O7-y, and Tl2Ba2CuOy) are theoretically investigated from the high-order perturbation formulas of these parameters for a 3d(9) 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 3d(9) ions) in the high-T-c superconductors.
部门归属	[kuang, min-quan ; wu, shao-yi ; hu, xian-fen ; song, bo-tao] univ elect sci & technol china, sch phys elect, chengdu 610054, peoples r china. [wu, shao-yi] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. ; kuang, mq (reprint author), univ elect sci & technol china, sch phys elect, chengdu 610054, peoples r china. ; mqkuang@yeah.net
关键词	Knight Shifts Hyperfine Structure Constants Cu-63(2+) Bi1.6pb0.4sr2ca2cu3o10 Tlsr2cacu2o7-y Tl2ba2cuoy Peierls Compound Cugeo3 Superposition Model Electronic-state Cu-63,Cu-65 Nmr Single-crystal Spin Dynamics Tlsr2cacu2o7-delta Diffraction Tl2ba2cuoy
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71293
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Q. Kuang,S. Y. Wu,X. F. Hu,et al. Theoretical Investigations of the Knight Shifts and the Hyperfine Structure Constants for the Tetragonal Cu2+ Sites in the Bismuth- and Thallium-Based High-T-c Superconductors[J]. Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,2013,68(6-7):442-446.
APA	M. Q. Kuang,S. Y. Wu,X. F. Hu,&B. T. Song.(2013).Theoretical Investigations of the Knight Shifts and the Hyperfine Structure Constants for the Tetragonal Cu2+ Sites in the Bismuth- and Thallium-Based High-T-c Superconductors.Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,68(6-7),442-446.
MLA	M. Q. Kuang,et al."Theoretical Investigations of the Knight Shifts and the Hyperfine Structure Constants for the Tetragonal Cu2+ Sites in the Bismuth- and Thallium-Based High-T-c Superconductors".Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences 68.6-7(2013):442-446.