From high <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math> to low <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>: Multiorbital effects in transition metal oxides
Michael Klett, Tilman Schwemmer, Sebastian Wolf, Xianxin Wu, David Riegler, Andreas Dittmaier, Domenico Di Sante, Gang Li, Werner Hanke, Stephan Rachel, Ronny Thomale
Abstract
Despite the structural resemblance of certain cuprate and nickelate parent compounds there is a striking spread of ${T}_{c}$ among such transition metal oxide superconductors. We adopt a minimal two-orbital ${e}_{g}$ model which covers cuprates and nickelate heterostructures in different parametric limits, and analyze its superconducting instabilities. The joint consideration of interactions, doping, fermiology, and in particular the ${e}_{g}$ orbital splitting allows us to explain the strongly differing pairing propensities in cuprate and nickelate superconductors.
Topics & Concepts
CupratePairingTransition metalSuperconductivityCondensed matter physicsOxideMaterials scienceMetalCrystallographyHeterojunctionJoint (building)Chemical physicsTransition temperatureSuperconducting transition temperatureElectronic structureChemistryInorganic compoundPhysicsParametric statisticsPhysics of Superconductivity and MagnetismChemical and Physical Properties of MaterialsAdvanced Physical and Chemical Molecular Interactions