Proximity-Induced Superconductivity in a 2D Kondo Lattice of an <i>f</i>-Electron-Based Surface Alloy.

ABSTRACT: Realizing hybrids of low-dimensional Kondo lattices and superconducting substrates leads to fascinating platforms for studying the exciting physics of strongly correlated electron systems with induced superconducting pairing. Here, we report a scanning tunneling microscopy and spectroscopy study of a new type of two-dimensional (2D) La-Ce alloy grown epitaxially on a superconducting Re(0001) substrate. We observe the characteristic spectroscopic signature of a hybridization gap evidencing the coherent spin screening in the 2D Kondo lattice realized by the ultrathin La-Ce alloy film on normal conducting Re(0001). Upon lowering the temperature below the critical temperature of rhenium, a superconducting gap is induced exhibiting an energy asymmetry of the coherence peaks that arises from the

SUBMITTER: Kim H 

PROVIDER: S-EPMC11544701 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature