Interfacial charge transfer and persistent metallicity of ultrathin SrIrO 3 /SrRuO 3 heterostructures - Archive ouverte HAL
Article Dans Une Revue Science Advances Année : 2022

Interfacial charge transfer and persistent metallicity of ultrathin SrIrO 3 /SrRuO 3 heterostructures

Jocienne Nelson
Nathaniel Schreiber
Alexandru Georgescu
  • Fonction : Auteur
Berit Goodge
Brendan Faeth
  • Fonction : Auteur
Christopher Parzyck
Cyrus Zeledon
Lena Kourkoutis
Darrell Schlom
Kyle Shen

Résumé

Interface quantum materials have yielded a plethora of previously unknown phenomena, including unconventional superconductivity, topological phases, and possible Majorana fermions. Typically, such states are detected at the interface between two insulating constituents by electrical transport, but whether either material is conducting, transport techniques become insensitive to interfacial properties. To overcome these limitations, we use angle-resolved photoemission spectroscopy and molecular beam epitaxy to reveal the electronic structure, charge transfer, doping profile, and carrier effective masses in a layer-by-layer fashion for the interface between the Dirac nodal-line semimetal SrIrO 3 and the correlated metallic Weyl ferromagnet SrRuO 3 . We find that electrons are transferred from the SrIrO 3 to SrRuO 3 , with an estimated screening length of λ = 3.2 ± 0.1 Å. In addition, we find that metallicity is preserved even down to a single SrIrO 3 layer, where the dimensionality-driven metal-insulator transition typically observed in SrIrO 3 is avoided because of strong hybridization of the Ir and Ru t 2 g states.

Dates et versions

hal-04266316 , version 1 (31-10-2023)

Identifiants

Citer

Jocienne Nelson, Nathaniel Schreiber, Alexandru Georgescu, Berit Goodge, Brendan Faeth, et al.. Interfacial charge transfer and persistent metallicity of ultrathin SrIrO 3 /SrRuO 3 heterostructures. Science Advances , 2022, 8 (5), pp.eabj0481-1/eabj0481-8. ⟨10.1126/sciadv.abj0481⟩. ⟨hal-04266316⟩
7 Consultations
0 Téléchargements

Altmetric

Partager

More