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Abstract
We report the synthesis and physical properties of a full Heusler compound, MgPd2Sb, which we found toshow superconductivity belowTc=2.2K. MgPd2Sb was obtained by a two-step solid-state reaction methodand its purity and cubic crystal structure [Fm-3m,a=6.4523(1) Å] were confirmed by powder x-ray diffrac-tion. Normal and superconducting states were studied by electrical resistivity, magnetic susceptibility, andheat capacity measurements. The results show that MgPd2Sb is a type-II, weak coupling superconductor(λe-p=0.53). The observed pressure dependence ofTc(Tc/p≈–0.23 K/GPa) is one of the strongest reportedfor a superconducting Heusler compound. The electronic structure, phonons, and electron-phonon coupling inMgPd2Sb were theoretically investigated. The obtained results are in agreement with the experiment, confirmingthe electron-phonon coupling mechanism of superconductivity. We compare the superconducting parameters tothose of all reported Heusler-type superconductors.
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Authors (8)
-
Gabriel Kuderowicz
-
Bartlomiej Wiendlocha
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R.j. Cava
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Full text
- Publication version
- Submitted Version
- License
- Copyright (2021 American Physical Society)
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
PHYSICAL REVIEW B
no. 103,
ISSN: 2469-9950 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Winiarski M., Kuderowicz G., Górnicka K., Litzbarski L., Stolecka K., Wiendlocha B., Cava R., Klimczuk T.: MgPd2Sb : A Mg-based Heusler-type superconductor// PHYSICAL REVIEW B -Vol. 103,iss. 21 (2021), s.214501-
- DOI:
- Digital Object Identifier (open in new tab) 10.1103/physrevb.103.214501
- Verified by:
- Gdańsk University of Technology
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