Atomic substitution and carbon isotope effect in superconducting MgCNi 3

T. Klimczuk, V. Gupta, M. Avdeev, J. D. Jorgensen, R. J. Cava

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The superconductor MgCNi3 has been chemically doped by substitution of Ru and Fe for Ni and B for C. Neither ferromagnetism nor increasing TC is observed, suggesting that MgCNi3 has optimal superconducting properties at its intrinsic composition and electron count The effect of Carbon isotope substitution on Tc is reported: the carbon isotope effect coefficient is αc = 0.54±0.03. This indicates that carbon-based phonons play a critical role in the superconductivity.

Original languageEnglish (US)
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages659-660
Number of pages2
DOIs
StatePublished - Dec 1 2006
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: Aug 10 2006Oct 17 2006

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period8/10/0610/17/06

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Alloys
  • Chemical doping
  • Superconducting isotope effect
  • Superconductivity

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  • Cite this

    Klimczuk, T., Gupta, V., Avdeev, M., Jorgensen, J. D., & Cava, R. J. (2006). Atomic substitution and carbon isotope effect in superconducting MgCNi 3. In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 659-660). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2354882