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Relationship Between Superconducting Transition Temperature and Combinative Energy in YBa 2 Cu 3 O 7-δ
- Source :
- Chinese Physics Letters. 16:446-448
- Publication Year :
- 1999
- Publisher :
- IOP Publishing, 1999.
-
Abstract
- Separating the unit cell of YBa2Cu3O7-δ into perovskite and rock salt blocks and considering the interaction between the two blocks, a computer program has been developed to calculate the interaction called combinative energy, between the blocks. The combinative energy in YBa2Cu3O7-δ with different δ value from 0.07 to 0.62 has been calculated. A close relationship between the superconducting transition temperature and the combinative energy in YBa2Cu3O7-δ has been established, and the change of the combinative energy found to be closely related to the transformation from orthorhombic I to II. It is believed that the interaction between the two blocks in the unit cell is of great importance to the superconductivity in YBa2Cu3O7-δ.
Details
- ISSN :
- 17413540 and 0256307X
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Chinese Physics Letters
- Accession number :
- edsair.doi...........af38559027626961bcbd80282d726565