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Journal Article

Superconductivity in Crystallographically Disordered LaHg6.4

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Prots,  Yurii
Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Krnel,  Mitja
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Svanidze,  Eteri
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Prots, Y., Krnel, M., Grin, Y., & Svanidze, E. (2022). Superconductivity in Crystallographically Disordered LaHg6.4. Inorganic Chemistry, 61(39), 15444-15451. doi:10.1021/acs.inorgchem.2c01987.


Cite as: https://hdl.handle.net/21.11116/0000-000B-4490-5
Abstract
The influence of structural disorder on superconductivity is not yet fully understood. A concurrent examination of crystallographic and physical properties of LaHg6.4 reveals that this material enters a superconducting state below Tc = 2.4 K while showing crystallographic disorder in one dimension. Lanthanum mercuride, which crystallizes in a new structure type (space group Cmcm, a = 9.779(2) Å, b = 28.891(4) Å, c = 5.0012(8) Å, Z = 8), has remained out of reach for nearly 50 years. In this crystal structure, strong disorder is present in the channels that propagate along the [001] direction. By implementing a combination of cutting-edge synthesis and characterization techniques, we were able to circumvent the complexity associated with the low formation temperature and chemical reactivity of this substance and study the superconductivity of LaHg6.4 in detail. © 2022 The Authors. Published by American Chemical Society.