Reentrance effect in normal-metal/superconducting hybrid loops

C. J. Chien, V. Chandrasekhar

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We have measured the transport properties of two mesoscopic hybrid loops composed of a normal-metal arm and a superconducting arm. The samples differed in the transmittance of the normal/superconducting interfaces. While the low-transmittance sample showed monotonic behavior in the low-temperature resistance, magnetoresistance, and differential resistance, the high-transmittance sample showed reentrant behavior in all three measurements. This reentrant behavior is due to coherent Andreev reflection at the normal/superconducting interfaces. We compare the reentrance effect for the three different measurements and discuss the results based on the theory of quasiclassical Green’s functions.

Original languageEnglish (US)
Pages (from-to)15356-15363
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number22
StatePublished - 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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