TRR 360 Seminar:

Spin-Orbit Coupling and Emergent Superconductivity in Oxide Heterostructures

Dr. Denis Maryenko

Spin-Orbit Coupling and Emergent Superconductivity in Oxide
Heterostructures

Dr. Denis Maryenko

RIKEN Center for Emergent Matter Science, Wako, Japan

Oxide compounds encompass a diverse class of materials hosting a rich spectrum of quantum phenomena, driven by the interplay of spin-orbit coupling (SOC), electron correlations, and lattice effects. In particular, materials with inherently strong SOC have drawn significant attention due to their potential to stabilize novel electronic phases with implications for future technologies. Controlling these materials and their interfaces provides a powerful route to engineering emergent quantum states.

The perovskite KTaO₃, with its pronounced SOC, has recently emerged as a promising platform for exploring unconventional superconductivity. However, precisely tailoring interfacial electronic states to induce conductivity in KTaO₃ remains a key challenge. In this talk, we present our recent progress on epitaxially grown KTaO₃-based heterostructures, focusing on the LaTiO₃/KTaO₃ interface. Our findings reveal the systematic emergence of superconductivity at this interface, which can be tuned via electric and magnetic fields, pointing to novel superconducting phases. These results provide new insights into the interplay between superconductivity and SOC in low-dimensional systems and establish a robust platform for investigating emergent physics in two-dimensional superconductors.