Double layer effect on superconductivity in YBa2Cu3O6+x

✍ Scribed by T. Kasuya

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 363 KB
• Volume: 224
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)90622-x

✦ Synopsis

The effects of double CuO2 layers in YBa2CuaO6+x for 0 < x < 1 were studied critically. For x= 0, the superexchange interaction through Y enhances the antiferromagnetic exchange interaction between the intralayer nearest-neighbor sites and the interlayer third-nearest neighbor sites. As a result, superconductivity due to Bose condensation of the molecular polarons proposed before is enhanced. An exciton-like excitation similar to that observed in SmB6 and YbBla is observed to support the present model.