An enhanced superconductivity in the supersaturated Al-Si solid solutions
V V Brazhkin; V V Glushkov; S V Demishev; Yu V Kosichkin; N E Sluchanko; A I Shulgin; V V Brazhkin; Gen. Phys. Inst., Acad. of Sci., Moscow, Russia; V V Glushkov; Gen. Phys. Inst., Acad. of Sci., Moscow, Russia; S V Demishev; Gen. Phys. Inst., Acad. of Sci., Moscow, Russia; Yu V Kosichkin; Gen. Phys. Inst., Acad. of Sci., Moscow, Russia; N E Sluchanko; Gen. Phys. Inst., Acad. of Sci., Moscow, Russia; A I Shulgin; Gen. Phys. Inst., Acad. of Sci., Moscow, Russia
Журнал:
Journal of Physics: Condensed Matter
Дата:
1993-08-09
Аннотация:
The Al L<sub>II-III</sub> X-ray emission spectra, galvanomagnetic properties and superconductive-state parameters were investigated in supersaturated Al<sub>1-x</sub>Si<sub>x</sub>: FCC solid solutions obtained by a high-pressure treatment (P<8.0 GPa). A drastic decrease in the charge carrier mobility and an anomalous behaviour of the hole concentration were found. The previous model which was used to describe the superconducting properties of Al-Si is reviewed, Anomalous galvanomagnetic properties and enhancement of the value of the superconducting temperature T<sub>c</sub> are assumed to be connected with the local 'soft regions' in the vicinity of the lattice instability.
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