Parity effect in a small superconducting grain: A rigorous result

Guang Shan Tian, Lei Han TANG

Research output: Contribution to journalJournal articlepeer-review

11 Citations (Scopus)


The parity effect in an ultrasmall superconducting grain is examined. By applying a generalized version of Lieb’s spin-reflection positivity technique, we show rigorously that the parity parameter (Formula presented) is nonvanishing in such a system. A positive lower bound for (Formula presented) is derived.

Original languageEnglish
Pages (from-to)12333-12337
Number of pages5
JournalPhysical Review B
Issue number18
Publication statusPublished - 1998

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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