Chevrel Phases
Abstract
Chevrel phase superconductors are a class of materials that have generated enormous interest in the superconductivity community. The fundamental interest in these materials has long included studies of the many Chevrel phase compounds that include rare-earth elements that are found to exhibit the coexistence of superconductivity and long-range magnetic order. The high vapour pressure of the Pb and S makes accurate phase studies difficult. Very careful exclusion of oxygen and water during material fabrication is required to avoid oxygen substituting for the sulphur in the Mo6S8 cluster and is necessary for reliable comparisons between structure/composition and superconducting properties. Thin films have been fabricated using a range of different deposition techniques including sputtering and laser ablation as well as spin coating. The consensus on the phonon density of states in Chevrel phase materials is good. The normal-state resistive properties of Chevrel phase compounds are rather well described in terms of their chemistry and are consistent with band structure calculations.
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The Jaccarino-Peter mechanism is likely not appropriate for UTe2 because this effect requires localized moments and is typically observed over a narrow angular field range.
“It was pointed out previously that the Jaccarino-Peter mechanism is likely not appropriate for UTe23 because this effect requires localized moments and is typically observed in experiment over a narrow angular field range48.”
From Orphan high field superconductivity in non-superconducting uranium ditelluride (2024) · cites this paper as [48]
The Jaccarino-Peter mechanism involves an internal exchange field generated by short-range magnetic fluctuations of localized moments, which opposes the applied magnetic field and reduces the total field, allowing superconductivity to persist to higher external fields.
“It involves an internal exchange field generated by the short-range magnetic fluctuations of localized moments, which opposes the applied magnetic field and reduces the total field48, allowing superconductivity to persist to higher external fields than it otherwise should (Fig. 4).”
From Orphan high field superconductivity in non-superconducting uranium ditelluride (2024) · cites this paper as [48]
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Orphan high field superconductivity in non-superconducting uranium ditelluride
Frank, C. E., Lewin, S. K., Saucedo Salas, G., Czajka, P., Hayes, I. M., Yoon, H., Metz, T., Paglione, J., Singleton, J., & Butch, N. P. (2024) · Nature Communications · doi:10.1038/s41467-024-47090-1 · Cited by 16 · see citing works
- Authors
- Hampshire, D. P.
- Corresponding author
- Hampshire, Damian P.
- ORCID
- Hampshire, Damian P.
- Venue
- Handbook of Superconductivity
- Publisher
- CRC Press
- Published
- 2022-05-16
- Pages
- 178-202
- OpenAlex
- W4280570266
- Cited by
- 1
- References
- 0
- Citations by year
- 2024: 1
- FWCI
- 0.62
- Type
- book chapter
- Language
- en
- Open access
- closed
- Locations
- CRC Press eBooks (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Inorganic Chemistry › Inorganic Chemistry and Materials
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Crystal Structures and Properties
- Physical Sciences › Materials Science › Materials Chemistry › Solid-state spectroscopy and crystallography
- Keywords
- Chevrel phase
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