Magnetic field dependence of the proximity-induced triplet superconductivity at ferromagnet/superconductor interfaces

Yoav Kalcheim, Israel Felner, Oded Millo, Tal Kirzhner, Gad Koren, Angelo Di Bernardo, Mehmet Egilmez, Mark G. Blamire, J. W.A. Robinson

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Long-ranged superconductor proximity effects recently found in superconductor-ferromagnetic (S-F) systems are generally attributed to the formation of triplet-pairing correlations due to various forms of magnetic inhomogeneities at the S-F interface. In order to investigate this conjecture within a single F layer coupled to a superconductor, we performed scanning tunneling spectroscopy on bilayers of La2/3Ca1/3MnO3 (LCMO) ferromagnetic thin films grown on high-temperature superconducting films of YBa2Cu3O7-δ or Pr1.85Ce0.15CuO4 under various magnetic fields. We find a strong correlation between the magnitude of superconductor-related spectral features measured on the LCMO layer and the degree of magnetic inhomogeneity controlled by the external magnetic field. This corroborates theoretical predictions regarding the role played by magnetic inhomogeneities in inducing triplet pairing at S-F interfaces.

Original languageAmerican English
Article number180506
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number18
DOIs
StatePublished - 21 May 2014

Fingerprint

Dive into the research topics of 'Magnetic field dependence of the proximity-induced triplet superconductivity at ferromagnet/superconductor interfaces'. Together they form a unique fingerprint.

Cite this