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Enhanced superconductivity in Hf-base metallic glasses
- Source :
- J. Phys.: Condens. Matter 20 (2008) 425215
- Publication Year :
- 2008
-
Abstract
- Systematic study of electrical resistivity of Hf_{100-x}Fe_x (x=20,25), Hf_{100-x}Cu_x (x=30,40,50), and Ti_{65}Cu_{35} metallic glasses has been done in the temperature range 0.3 K - 290 K, and in magnetic fields B <= 5 T. All Hf-base alloys are superconducting with T_c >= 0.44 K, which is well above T_c of pure crystalline Hf (0.13 K). From the initial slopes of the upper critical fields, (dH_{c2}/dT)_{T_c}, and resistivities we determined the dressed electronic densities of states, N_{\gamma}(E_F), for all alloys. Both T_c and N_{\gamma}(E_F) decrease with increasing x (Fe and Cu content). The results are compared with those for corresponding Zr-base metallic glasses and ion-implanted Hf films.<br />Comment: 9 pages, 4 figures, 1 table
- Subjects :
- Condensed Matter - Superconductivity
Subjects
Details
- Database :
- arXiv
- Journal :
- J. Phys.: Condens. Matter 20 (2008) 425215
- Publication Type :
- Report
- Accession number :
- edsarx.0806.0515
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/0953-8984/20/42/425215