Exponential Temperature Dependence of the Penetration Depth in Single Crystal [Formula presented]

F. Manzano, A. Carrington, N. E. Hussey, S. Lee, A. Yamamoto, S. Tajima

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The temperature dependence of the London penetration depth, [Formula presented], was measured in both single crystal and polycrystalline [Formula presented] samples by a high-resolution, radio frequency technique. A clear exponential temperature dependence of [Formula presented] was observed at low temperature, indicating [Formula presented]-wave pairing. A BCS fit to the lowest temperature data gives an in-plane energy gap [Formula presented] of [Formula presented] [Formula presented], which is significantly smaller than the standard BCS weak coupling value of 3.5. We find that the data are best described by a two-gap model.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Issue number4
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Exponential Temperature Dependence of the Penetration Depth in Single Crystal [Formula presented]'. Together they form a unique fingerprint.

Cite this