Anisotropic superconductivity in NbSe2 probed by magnetic penetration depth

P. Diener, P. Rodière, J. D. Fletcher, A. Carrington, J. P. Brison, R. Prozorov, T. Olheiser, R. W. Giannetta

Research output: Contribution to journalArticle

Abstract

NbSe2 shows coexistence of a charge density wave (TCDW ∼ 32 K) with a superconducting state below T = 7.2 K. Recent ARPES measurements revealed different values of the superconducting gap on the main sheets of the Fermi surface. These results suggest a multigap superconductivity such as in MgB2. The temperature dependence of the magnetic penetration depth (λ(T)) down to Tc/16 has been measured on high quality single crystals in the Meissner state. A strong increase of the in-plane penetration depth is observed, signaling the presence of low lying excitations. Given the relative contributions of each Fermi surface sheet, these measurements indicate that a reduced gap is not necessarily only found on the small Se sheet as suggested by the ARPES measurements. These results are discussed in a framework of multigap superconductivity.

Original languageEnglish (US)
Pages (from-to)700-701
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume460-462 I
Issue numberSPEC. ISS.
DOIs
StatePublished - Sep 1 2007

Keywords

  • NbSe
  • Penetration depth
  • Superfluid density

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Anisotropic superconductivity in NbSe<sub>2</sub> probed by magnetic penetration depth'. Together they form a unique fingerprint.

  • Cite this

    Diener, P., Rodière, P., Fletcher, J. D., Carrington, A., Brison, J. P., Prozorov, R., Olheiser, T., & Giannetta, R. W. (2007). Anisotropic superconductivity in NbSe2 probed by magnetic penetration depth. Physica C: Superconductivity and its applications, 460-462 I(SPEC. ISS.), 700-701. https://doi.org/10.1016/j.physc.2007.03.145