Giant Enhancement of Electron-Phonon Coupling in Dimensionality-Controlled SrRuO₃ Heterostructures.

ABSTRACT: Electrons in crystals interact closely with quantized lattice degree of freedom, determining fundamental electrodynamic behaviors and versatile correlated functionalities. However, the strength of the electron-phonon interaction is so far determined as an intrinsic value of a given material, restricting the development of potential electronic and phononic applications employing the tunable coupling strength. Here, it is demonstrated that the electron-phonon coupling in SrRuO₃ can be largely controlled by multiple intuitive tuning knobs available in synthetic crystals. The coupling strength of quasi-2D SrRuO₃ is enhanced by ≈300-fold compared with that of bulk SrRuO₃ . This enormous enhancement is attributed to the non-local nature of the electron-phonon cou

SUBMITTER: Choi IH 

PROVIDER: S-EPMC10238185 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature