Importance of Specific Heat Characterization when Reporting New Superconductors: An Example of Superconductivity in LiGa 2 Rh

Elizabeth M. Carnicom, Weiwei Xie, Zoe Yang, Karolina Górnicka, Tai Kong, Tomasz Klimczuk, Robert J. Cava

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We show that the full-Heusler compound LiGa 2 Rh is a superconductor with T c = 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.

Original languageEnglish (US)
Pages (from-to)2164-2173
Number of pages10
JournalChemistry of Materials
Volume31
Issue number6
DOIs
StatePublished - Mar 26 2019

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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