Weak coupling theory for La2CuO4
Abstract
Numerical calculations based on the weak coupling theory were carried out earlier for La2CuO4. A significant difference was found between the Hubbard model with a single charge and the interaction of a general form with four effective charges. In the first case, the metal is always unstable, and depending on the sign of the charge, it goes over either to the antiferromagnetic or superconducting state.
- Publication:
-
Zhurnal Eksperimentalnoi i Teoreticheskoi Fiziki
- Pub Date:
- April 1988
- Bibcode:
- 1988ZhETF..94..344D
- Keywords:
-
- Copper Compounds;
- Electronic Spectra;
- Lanthanum Compounds;
- Superconductors;
- Weak Interactions (Field Theory);
- Antiferromagnetism;
- Coupling;
- Density Wave Model;
- Magnons;
- Solid-State Physics