We study the dependence on filling and pressure of the superconducting and ferromagnetic critical temperatures of the ruthenocuprates, within the two-band model. At zero pressure, we find separate regions of coexistence of superconductivity and ferromagnetism as a function of filling, with contiguous regions merging together as the pressure increases. As a function of pressure, a stronger enhancement of the magnetic phase results in a reduced pressure effect on the superconducting critical temperature. A comparison with recent experiments on the determination of the critical temperatures as a function of the pressure is also discussed.
Pressure dependence of superconducting and magnetic critical temperatures in the ruthenocuprates
ANGILELLA, Giuseppe Gioacchino Neil;
2005-01-01
Abstract
We study the dependence on filling and pressure of the superconducting and ferromagnetic critical temperatures of the ruthenocuprates, within the two-band model. At zero pressure, we find separate regions of coexistence of superconductivity and ferromagnetism as a function of filling, with contiguous regions merging together as the pressure increases. As a function of pressure, a stronger enhancement of the magnetic phase results in a reduced pressure effect on the superconducting critical temperature. A comparison with recent experiments on the determination of the critical temperatures as a function of the pressure is also discussed.File | Dimensione | Formato | |
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