Unknown

Dataset Information

0

Visualizing the unusual spectral weight transfer in DyBa2Cu3O7-δ thin film.


ABSTRACT: We report a Spectroscopic Imaging Scanning Tunneling Microscopy (SI-STM) study of a DyBa2Cu3O7-δ (DBCO) thin film (Tc ~ 79 K) synthesized by the molecular beam epitaxy (MBE). We observed an unusual transfer of spectral weight in the local density of states (LDOS) spectra occurring only within the superconducting gap. By a systematic control of the tip-sample distance and the junction resistance, we demonstrate that the spectral weight transfer can be switched at a nano-meter length scale. These results suggest that an interaction between the STM tip and the sample alters the electronic configurations in the film. This probably originates from a combination of an intrinsic band bending at the interface between the surface and the bulk, and a tip-induced band bending. These results may open a new avenue for band engineering and applications of thin films of high-Tc cuprates.

PROVIDER: S-EPMC8763906 | BioStudies |

REPOSITORIES: biostudies

Similar Datasets

| S-EPMC5974753 | BioStudies
| S-EPMC8658176 | BioStudies
| S-EPMC8622521 | BioStudies
| S-EPMC8741980 | BioStudies
| S-EPMC6648274 | BioStudies
| S-EPMC6043505 | BioStudies
| S-EPMC4291041 | BioStudies
| S-EPMC5234022 | BioStudies
| S-EPMC6895227 | BioStudies
| S-EPMC8195678 | BioStudies