Investigation of Hole Distribution in Y1-xPrxBa2Cu3O7

Chin. Phys. Lett.

1998, Vol. 15

Issue (7): 525-527 DOI:

Original Articles

Investigation of Hole Distribution in Y_1-xPr_xBa₂Cu₃O₇

YU Ya-bin^1,2;CAO Guang-han¹;JIAO Zheng-kuan¹

¹Department of Physics, Zhejiang University, Hangzhou 310027 ²Department of Physics, Yantai University, Yantai 264005

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YU Ya-bin, CAO Guang-han, JIAO Zheng-kuan 1998 Chin. Phys. Lett. 15 525-527

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Abstract The electronic structure of Y_1-xPr_xBa₂Cu₃O₇ is described by a tight-binding Hamiltonian in which the Pr-O hybridization and the 2p_σ - 2p_π Coulomb repulsion are taken into account. The dependence of planar hole-density, localized hole-density and chemical potential of holes on Pr concentration is calculated by a coherent potential approximation. The result shows that the insensitivity of hole-density on the CuO₃ chains with the Pr-doping is due to the 2p_σ - 2p_π repulsion. Some other experimental facts can also be well interpreted.

Keywords: 74.20.Mn 74.25.Jb 74.72.Bk

Published: 01 July 1998

PACS:	74.20.Mn	(Nonconventional mechanisms)
	74.25.Jb	(Electronic structure (photoemission, etc.))
	74.72.Bk

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I7/0525

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