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Electronic structure of the YBa2Cu3O7 superconductor containing twin boundaries

Wang Chongyu, Yue Yong, Liu Senying

DOI 10.1103/PhysRevB.41.6591 · Physical Review B

T1

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Abstract

Based on our structural model and a tight-binding Hamiltonian the electronic structure of the superconductor YBa2Cu3O7 has been calculated by the use of a recursion method. Compared with the single crystal, we mainly analyzed the feature of the electronic structure showing the twin boundary and evaluated the probability of various configurations of Cu and O ions, the type of the hybridization bonds, and various [Cu-O]+ complexes in superconducting ceramics. Meanwhile, we indicate that the twin boundary may be closely related to an electron deficiency.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
YBa2Cu3O7

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—Pressure not reportedunknown

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