Effects of oxygen-vacancies in high-temperature cuprate superconductors
We investigate the effects of oxygen vacancies on the magnetic properties and superconducting transition temperature of high-temperature cuprate superconductors. Starting with the d-p Hamiltonian, we simultaneously employ the coherent potential approximation to account for the effects of oxygen vaca...
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| Main Authors: | , , |
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| Format: | text |
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Animo Repository
2005
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| Online Access: | https://animorepository.dlsu.edu.ph/faculty_research/1233 https://animorepository.dlsu.edu.ph/context/faculty_research/article/2232/type/native/viewcontent |
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| Institution: | De La Salle University |
| Summary: | We investigate the effects of oxygen vacancies on the magnetic properties and superconducting transition temperature of high-temperature cuprate superconductors. Starting with the d-p Hamiltonian, we simultaneously employ the coherent potential approximation to account for the effects of oxygen vacancies, and the fluctuation-exchange scheme to address the copper-site Coulomb interactions. Our results show that the presence of oxygen vacancies weakens the antiferromagnetic spin fluctuations of d-electrons subsequently lowering the superconducting transition temperature. © 2005 Elsevier Ltd. All rights reserved. |
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