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.
| Original language | English |
|---|---|
| Pages (from-to) | 11-15 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 466 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Nov 1 2007 |
| Externally published | Yes |
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Keywords
- NaAlSi
- Superconductivity
- Ternary silicide
- Type-II superconductor
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Superconductivity in ternary silicide NaAlSi with layered diamond-like structure. / Kuroiwa, S.; Kawashima, H.; Kinoshita, H.; Okabe, H.; Akimitsu, Jun.
In: Physica C: Superconductivity and its Applications, Vol. 466, No. 1-2, 01.11.2007, p. 11-15.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superconductivity in ternary silicide NaAlSi with layered diamond-like structure
AU - Kuroiwa, S.
AU - Kawashima, H.
AU - Kinoshita, H.
AU - Okabe, H.
AU - Akimitsu, Jun
PY - 2007/11/1
Y1 - 2007/11/1
N2 - 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.
AB - 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.
KW - NaAlSi
KW - Superconductivity
KW - Ternary silicide
KW - Type-II superconductor
UR - http://www.scopus.com/inward/record.url?scp=34748858522&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34748858522&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2007.04.232
DO - 10.1016/j.physc.2007.04.232
M3 - Article
VL - 466
SP - 11
EP - 15
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -