Local-charge-density transfer and organic superconductivity: A positron study

Y. Lou, H. L. Yen, J. M. Wrobel, H. Zhang, Y. C. Jean, G. Saito, Z. J. Huang, C. W. Chu

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The temperature dependence between 4 and 294 K of the positron lifetime is measured in the organic superconductor -(BEDT-TTF)2Cu(NCS)2. The lifetime decreases rapidly with temperature from 350 to 343 ps below Tc, and increases monotonically above Tc to 372 ps. These experimental results are interpreted in terms of a transfer in the local charge density of organic superconductors associated with the superconducting transition. Theoretical positron density and positron-electron overlap distributions are calculated to support this interpretation.

Original languageEnglish
Pages (from-to)12255-12258
Number of pages4
JournalPhysical Review B
Issue number17
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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