The Singlet-Triplet Jahn-Teller Polar Centers in Copper Oxides
Abstract
One of the most exciting features of the hole centers CuO45- in doped cuprates is in their unusually complicated ground state as a result of electronic quasi-degeneracy. An additional hole, doped to the basic CuO46- cluster with the b1g hole can occupy both the same hybrid Cu3d-O2p orbital state resulting in a Zhang-Rice singlet 1A1g and the purely oxygen eu molecular orbital resulting in singlet or triplet 1,3Eu term with the close energies. We present a detailed analysis of the (pseudo)-Jahn-Teller effect driven by the near-degeneracy within the (1A1g, 1,3Eu)-manifold.
About the Authors
A. S. Moskvin
Department of Theoretical Physics, Ural State University
Russian Federation
Russian Federation
620083, Lenin Ave. 51,Ekaterinburg
Yu. D. Panov
Department of Theoretical Physics, Ural State University
Russian Federation
Russian Federation
620083, Lenin Ave. 51,Ekaterinburg
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Review
For citations:
Moskvin A.S., Panov Yu.D. The Singlet-Triplet Jahn-Teller Polar Centers in Copper Oxides. Magnetic Resonance in Solids. 1998;2(1):1-25.
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