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Importance of Specific Heat Characterization when Reporting New Superconductors: An Example of Superconductivity in LiGa2Rh

Abstract

We show that the full-Heusler compound LiGa2Rh is a superconductor with Tc = 2.4 K. The new superconductor was found as a result of an intuition-based extension of a database search for superconductors that looked for the presence of peaks in the electronic band structure near the Fermi energy. The measurement of the entropy loss during the transition from the nonsuperconducting to the superconducting state, a straightforward measurement rarely presented in reports of “new” superconducting materials, played a critical role in identifying and isolating the superconducting compound. This study presents a particularly good example of how specific heat measurements are important for the identification and isolation of a new superconductor, since much more frequently reported resistive and magnetic susceptibility characterizations are often not enough to confirm the identification of a new superconducting material.

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
CHEMISTRY OF MATERIALS no. 31, edition 6, pages 2164 - 2173,
ISSN: 0897-4756
Language:
English
Publication year:
2019
Bibliographic description:
Carnicom E. M., Xie W., Yang Z., Górnicka K., Kong T., Klimczuk T., Cava R. J.: Importance of Specific Heat Characterization when Reporting New Superconductors: An Example of Superconductivity in LiGa2Rh// CHEMISTRY OF MATERIALS. -Vol. 31, iss. 6 (2019), s.2164-2173
DOI:
Digital Object Identifier (open in new tab) 10.1021/acs.chemmater.9b00258
Verified by:
Gdańsk University of Technology

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