The Role of the Electron-Hole System in the Thermodynamics of YBa2Cu3O7−δGas Equilibrium
| Autor: | A. A. Lakhtin, V. I. Tsidilkovskii, V. A. Mezrin, I. A. Leonidov |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Free electron model
Condensed matter physics Band gap Chemistry Thermodynamic equilibrium Fermi level Thermodynamics Electronic structure Electron hole Condensed Matter Physics Electronic Optical and Magnetic Materials symbols.namesake Effective mass (solid-state physics) Equilibrium thermodynamics symbols |
| Zdroj: | physica status solidi (b). 168:233-244 |
| ISSN: | 1521-3951 0370-1972 |
| Popis: | The YBa2Cu3O7−δ-gas equilibrium is studied theoretically in terms of the approach proposed earlier by the authors. The contribution of the electron-hole system of the HTSC oxide to the equilibrium thermodynamics is studied for several models of the electronic structure. Oxygen—oxygen interactions in the basal plane are taken into account to calculate the chemical potential of oxygen ions in the oxide, distinct from the previous paper where these interactions are disregarded. It is shown that the equilibrium is well described for a sufficiently broad (much broader than kT) valence band with a hole effective mass mp ≈ 3 to 5 free electron masses. [Russian Text Ignored.] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text