Unknown

Dataset Information

0

High-order replica bands in monolayer FeSe/SrTiO3 revealed by polarization-dependent photoemission spectroscopy.

ABSTRACT: The mechanism of the enhanced superconductivity in monolayer FeSe/SrTiO3 has been enthusiastically studied and debated over the past decade. One specific observation has been taken to be of central importance: the replica bands in the photoemission spectrum. Although suggestive of electron-phonon interaction in the material, the essence of these spectroscopic features remains highly controversial. In this work, we conduct angle-resolved photoemission spectroscopy measurements on monolayer FeSe/SrTiO3 using linearly polarized photons. This configuration enables unambiguous characterization of the valence electronic structure with a suppression of the spectral background. We consistently observe high-order replica bands derived from various Fe 3d bands, similar to those observed on bare SrTiO3. The intensity of the replica bands is unexpectedly high and different between dxy and dyz bands. Our results provide new insights on the electronic structure of this high-temperature superconductor and the physical origin of the photoemission replica bands.

SUBMITTER: Liu C 

PROVIDER: S-EPMC8319137 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

The mechanism of the enhanced superconductivity in monolayer FeSe/SrTiO<sub>3</sub> has been enthusiastically studied and debated over the past decade. One specific observation has been taken to be of central importance: the replica bands in the photoemission spectrum. Although suggestive of electron-phonon interaction in the material, the essence of these spectroscopic features remains highly controversial. In this work, we conduct angle-resolved photoemission spectroscopy measurements on monol  ...[more]

Similar Datasets

Unknown Significantly enhanced superconductivity in monolayer FeSe films on SrTiO<sub>3</sub>(001) via metallic δ-doping.
| S-EPMC10833465 | biostudies-literature
Unknown Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe<sub>2</sub>.
| S-EPMC10542375 | biostudies-literature
Unknown What makes the <i>T</i><sub>c</sub> of monolayer FeSe on SrTiO<sub>3</sub> so high: a sign-problem-free quantum Monte Carlo study.
| S-EPMC4914519 | biostudies-literature
Unknown Ubiquitous strong electron-phonon coupling at the interface of FeSe/SrTiO<sub>3</sub>.
| S-EPMC5311057 | biostudies-literature
Unknown Anomalous correlation effects and unique phase diagram of electron-doped FeSe revealed by photoemission spectroscopy.
| S-EPMC4786746 | biostudies-literature
Unknown Topological edge states in high-temperature superconductiving FeSe/SrTiO<sub>3</sub> films with Te substitution.
| S-EPMC6411874 | biostudies-literature
Unknown Incommensurate smectic phase in close proximity to the high-T<sub>c</sub> superconductor FeSe/SrTiO<sub>3</sub>.
| S-EPMC8044195 | biostudies-literature
Unknown Spectroscopic evidence of superconductivity pairing at 83 K in single-layer FeSe/SrTiO<sub>3</sub> films.
| S-EPMC8121788 | biostudies-literature
Unknown Light induced non-volatile switching of superconductivity in single layer FeSe on SrTiO<sub>3</sub> substrate.
| S-EPMC6325130 | biostudies-literature
Unknown Evidence of cooperative effect on the enhanced superconducting transition temperature at the FeSe/SrTiO<sub>3</sub> interface.
| S-EPMC6377624 | biostudies-literature