Possibility of pressure-induced superconductivity by phonon mechanism in Pd
| Autor: | Naoshi Suzuki, Koshiro Yanai, Ikutaro Hamada, Tomoki Takezawa |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Phonon Transition temperature Energy Engineering and Power Technology Condensed Matter Physics Electronic Optical and Magnetic Materials Transition metal Ferromagnetism Electrical resistivity and conductivity Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Electrical and Electronic Engineering Ambient pressure Spin-½ |
| Zdroj: | Physica C: Superconductivity. :569-570 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/s0921-4534(02)02744-2 |
| Popis: | Pressure dependencies of electronic structures and lattice dynamics of Pd which is close to ferromagnetic instability at ambient pressure are investigated on the basis of first-principles calculations. Particular attention is paid to phonon-mediated superconductivity: the transition temperature T c without taking into account spin fluctuation effects are estimated to be 6.40–8.55 K at ambient pressure and 0.58–1.44 K at 50 GPa. Though spin fluctuation effects would suppress the superconducting transition at 0 GPa, under pressures the transition would appear due to the rapid decreasing of spin fluctuation effects with increasing pressure. We estimate the T c at 50 GPa to be at most 0.71 K if we include spin fluctuation effects. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect