Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3

Abstract

Single unit cell films of iron selenide (1UC FeSe) grown on SrTiO3 (STO) substrates have recently shown superconducting energy gaps opening at temperatures close to the boiling point of liquid nitrogen (77 K), a record for iron-based superconductors. Towards understanding why Cooper pairs form at such high temperatures, a primary question to address is the role, if any, of the STO substrate. Here, we report high resolution angle resolved photoemission spectroscopy (ARPES) results which reveal an unexpected and unique characteristic of the 1UC FeSe/STO system: shake-off bands suggesting the presence of bosonic modes, most likely oxygen optical phonons in STO, which couple to the FeSe electrons with only small momentum transfer. Such coupling has the unusual benefit of helping superconductivity in most channels, including those mediated by spin fluctuations. Our calculations suggest such coupling is responsible for raising the superconducting gap opening temperature in 1UC FeSe/STO. This discovery suggests a pathway to engineer high temperature superconductors.

25 pages, 12 figures

References in corpus (7)

• Heavily electron-doped electronic structure and isotropic superconducting gap in AxFe2Se2 (A=K,Cs)
• Direct observation of high temperature superconductivity in one-unit-cell FeSe films
• A Systematic Study of Electron-Phonon Coupling to Oxygen Modes Across the Cuprates
• Origin of the large phonon band-gap in SrTiO3 and the vibrational signatures of ferroelectricity in ATiO3 perovskite: First principles lattice dynamics and inelastic neutron scattering of PbTiO3, BaTiO3 and SrTiO3
• Structure and Correlation Effects in Semiconducting SrTiO${}_3$
• Superconductivity in the PbO-type Structure alpha-FeSe
• Specific heat of Ca${}_{0.32}$Na${}_{0.68}$Fe${}_2$As${}_2$ single crystals: unconventional s${}_{\pm }$ multi-band superconductivity with intermediate repulsive interband coupling and sizable attractive intraband couplings

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• Quantitative comparison of LDA+DMFT and ARPES spectral functions
• Electronically driven nematicity in FeSe Films on SrTiO3
• Analyzing scanning tunneling spectroscopy for Fe-based superconductor Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ and extracting $s$-wave density of states
• Large ferromagnetic-like band splitting in ultrathin ${\mathrm{SmC}}_6$ films
• Plasmonic polaron in self-intercalated 1T-TiS2
• Superconductivity of 30.4 K and its Reemergence under Pressure in Fe1.11Se Synthesized via Ion-exchange and De-intercalation Reaction
• Oxide MBE-ARPES at SSRL Beamline 5-2
• Dynamical Coulomb Blockade as a Signature of the Sign-Reversing Cooper Pairing Potential
• Suppression and revival of superconducting phase coherence in monolayer FeSe/SrTiO${}_3$
• Origin of the Electronic Structure in Single-Layer FeSe/SrTiO3 Films
• Hidden Fermi surface in K${}_x$Fe${}_{2-y}$Se${}_2$: LDA+DMFT study
• Dark Andreev States in Superconductors
• Superconductivity in the bilayer Hubbard model: Are two Fermi surfaces better than one?
• Unconventional superconductivity mediated solely by isotropic electron-phonon interaction
• Many-body Green's function approaches to the doped Fröhlich solid: Exact solutions and anomalous mass enhancement
• Interfacial Polarons Driven by Charge Transfer In WSe2/Cuprate Superconductor Systems
• Orientation-dependent superconductivity and electronic structure of the rare-earth metal/KTaO3 interfaces
• Dual Enhancement of Superconductivity in FeSe/SrTiO3 via Orbital and Correlation Synergy
• Unconventional incommensurate epitaxy of superconducting FeSe films on SrTiO${}_3$
• Quantized Transport of $\nu =2/3$ Fractional Quantum Hall Edge with Disordered Superconducting Proximity
• What controls the superconducting dome of electron-doped FeSe?
• Fabrication of oxide/FeSe multilayer films using the PLD technique
• Quantum Weak Equivalence Principle and the Gravitational Casimir Effect in Superconductors
• Temperature evolution of the Fermi surface of the FeSe monolayer on SrTiO${}_3$
• Microscopic theory for electron-phonon coupling in twisted bilayer graphene
• Stripe Antiferromagnetic Ground-State Configuration of FeSe Revealed by Density Functional Theory
• Enhanced pairing mechanism in Cuprate-type crystals