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Evidence for High T C Superconducting Transitions in Isolated Al −45 and Al −47 Nanoclusters

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Abstract

Heat capacities measured for Al −45 and Al −47 nanoclusters have reproducible jumps at ∼200 K. These jumps are consistent with theoretical predictions that some clusters with highly degenerate electronic states near the Fermi level will undergo a transition into a high T C superconducting state. An analysis based on a theoretical treatment of pairing in Al −45 and Al −47 agrees well with the experimental data in both the value of the critical temperature and in the size and width of the jumps in the heat capacity.

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Authors and Affiliations

  1. Chemistry Department, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA

    Baopeng Cao, Colleen M. Neal, Anne K. Starace & Martin F. Jarrold

  2. L. Landau Institute for Theoretical Physics, 117334, Moscow, Russia

    Yurii N. Ovchinnikov

  3. Lawrence Berkeley Laboratory, University of California, Berkeley, CA, 94720, USA

    Vladimir Z. Kresin

Authors
  1. Baopeng Cao
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  2. Colleen M. Neal
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  3. Anne K. Starace
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  4. Yurii N. Ovchinnikov
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  5. Vladimir Z. Kresin
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  6. Martin F. Jarrold
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Corresponding author

Correspondence to Vladimir Z. Kresin.

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Cao, B., Neal, C.M., Starace, A.K. et al. Evidence for High T C Superconducting Transitions in Isolated Al −45 and Al −47 Nanoclusters. J Supercond Nov Magn 21, 163–166 (2008). https://doi.org/10.1007/s10948-008-0314-3

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  • DOI: https://doi.org/10.1007/s10948-008-0314-3

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