Evidence for unconventional superconductivity in YBa2Cu3O6.9
β Scribed by D.A. Brawner; H.R. Ott
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 198 KB
- Volume
- 235-240
- Category
- Article
- ISSN
- 0921-4534
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Neutron diffraction experiments, performed on a powder sample, have shown that the reduced compound YBa2Cu306 orders with an antiferromagnetic structure at a temperature as high as 500 K. Magnetic moments of about 0.48 +\_0.05 Pa are aligned along the tetragonal c-axis and exhibit an antiferromagnet
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, su