Publications [#368638] of Gleb Finkelstein

Preprints

1. Ethan G. Arnault, Gleb Finklestein, Athby H. Al-Tawhid, Salva Salmani-Rezaie, David A. Muller, Divine P. Kumah, Mohammad S. Bahramy, and Kaveh Ahadi, Anisotropic Superconductivity at Epitaxial KTaO3(111) interfaces, submitted to Science Advances (2022) [submitted]
   (last updated on 2023/01/06)

   Abstract:
   A two-dimensional, anisotropic superconductivity was recently discovered at the KTaO3 (111) interfaces. The nature of the anisotropic superconducting transition remains a subject of debate. To investigate the origins of the observed behavior, we grew epitaxial LaSrMnO3/KTaO3(111) het- erostructures. We show that the superconductivity is robust against the in-plane magnetic field and violates the Pauli limit. We also show that the Cooper pairs are more resilient when the bias is along [11 ̄2] (I ∥ [11 ̄2]) and the magnetic field is along [1 ̄10] (B ∥ [1 ̄10]). We discuss the anisotropic nature of superconductivity in the context of electronic structure, orbital character, and spin texture at the KTaO3 (111) interfaces. The results point to new opportunities to enhance superconducting tran- sition temperatures and critical fields in crystalline, two-dimensional superconductors with strong spin-orbit coupling.