Penetration of Andreev bound states into the ferromagnet in a SrRu O3 / (110) Y Ba2 Cu3 O7-δ bilayer: A scanning tunneling spectroscopy study

Itay Asulin*, Ofer Yuli, Israel Felner, Gad Koren, Oded Millo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Scanning tunneling spectroscopy of thin epitaxial SrRu O3 / (110) Y Ba2 Cu3 O7-δ ferromagnet/superconductor bilayers reveals a clear penetration of the Andreev bound states into the ferromagnetic layer. The penetration is manifested in the density of states of the ferromagnet as a split zero-bias conductance peak with an imbalance between peak heights. Our data indicate that the splitting occurs at the superconductor side as a consequence of induced magnetization, confirming recent theoretical predictions. The imbalance is attributed to the spin polarization in the ferromagnet.

Original languageAmerican English
Article number064507
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number6
DOIs
StatePublished - 7 Aug 2007

Fingerprint

Dive into the research topics of 'Penetration of Andreev bound states into the ferromagnet in a SrRu O3 / (110) Y Ba2 Cu3 O7-δ bilayer: A scanning tunneling spectroscopy study'. Together they form a unique fingerprint.

Cite this