Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1819696 | Physica C: Superconductivity and its Applications | 2007 | 5 Pages |
Abstract
We have succeeded in synthesizing a new member of ternary silicide NaAlSi with a superconducting transition temperature Tc−onset = 7 K by high pressure technique. The crystal structure of NaAlSi is the layered diamond-like structure with a space group of P4/nmm (no. 129, Z = 3) and without inversion symmetry. The superconducting properties in NaAlSi have been investigated by means of DC and AC magnetic susceptibility measurements. These magnetic responses indicate that NaAlSi belongs to a conventional type-II superconductor with a Ginzbrug–Landau parameter κ = 13.8. From the band structure calculations, we found that the hole band of Si p- and electron Al s-orbitals play an important role for the superconductivity in this system.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
S. Kuroiwa, H. Kawashima, H. Kinoshita, H. Okabe, J. Akimitsu,