Exchange Splitting and Insulating Gap in La<suB>2</suB>CuO<suB>4</suB>

Chin. Phys. Lett.

1999, Vol. 16

Issue (3): 202-204 DOI:

Original Articles

Exchange Splitting and Insulating Gap in La₂CuO₄

WU Hua^1,2;ZHENG Qing-qi^1,3

¹Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 ²Hefei Institute for Advanced Study, University of Science and Technology of China, Hefei 230026 ³State Key Laboratory for Magnetism, Chinese Academy of Sciences, Beijing 100080

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WU Hua, ZHENG Qing-qi 1999 Chin. Phys. Lett. 16 202-204

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Abstract A full-potential band calculation for La₂CuO₄is performed within the local-spin-density approximation. It is shown that the strongly orbital-dependent exchange splittings due to the anisotropic exchange potential induce an antiferromagnetic and insulating solution improved upon the previous nonmagnetic and metallic one.

Keywords: 71.20.-b 71.15.Mb

Published: 01 March 1999

PACS:	71.20.-b	(Electron density of states and band structure of crystalline solids)
	71.15.Mb	(Density functional theory, local density approximation, gradient and other corrections)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1999/V16/I3/0202

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