[Back]


Publications in Scientific Journals:

E. Bauer, H. Kaldarar, R. Lackner, H. Michor, W. Steiner, E.-W. Scheidt, A. Galatanu, F. Marabelli, T. Wazumi, K. Kumagai, M. Feuerbacher:
"Superconductivity in the complex metallic alloy β-Al3Mg2";
Physical Review B, 76 (2007), 014528-1 - 014528-7.



English abstract:
Superconductivity in the complex metallic alloy β-Al3Mg2

E. Bauer, H. Kaldarar, R. Lackner, H. Michor, and W. Steiner
Institut für Festkörperphysik, Technische Universität Wien, A-1040 Wien, Austria

E.-W. Scheidt
Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität Augsburg, D-86159 Augsburg, Germany

A. Galatanu
National Institute for Materials Physics, 77125 Magurele, Romania

F. Marabelli
Physics Department "A. Volta," University of Pavia, I-27100 Pavia, Italy

T. Wazumi and K. Kumagai
Division of Physics, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan

M. Feuerbacher
Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany


Transport and thermodynamic properties were studied for the complex metallic compound β-Al3Mg2, composed of 925 atoms per unit cell. β-Al3Mg2 exhibits bulk superconductivity below Tc=0.87 K. An exponential temperature dependence of the specific heat well below Tc indicates BCS-like behavior with a nodeless gap of width ΔBCS(0)~ 1.5 K. The coherence length is derived as ξ0=4.8510−8 m and the Ginzburg Landau parameter κGL~ 13, characterizing β-Al3Mg2 as a type II superconductor. Superconductivity in β-Al3Mg2 occurs in the absence of inversion symmetry of the crystal. Surprisingly, in spite of the rather complex crystal structure of β-Al3Mg2, physical properties turn out to be quite simple.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevB.76.014528

Electronic version of the publication:
http://link.aps.org/abstract/PRB/v76/e014528


Created from the Publication Database of the Vienna University of Technology.