Electronic nematicity in Sr <sub>2</sub> RuO <sub>4</sub>
J. Wu, Hari P. Nair, A. T. Bollinger, Xi He, Ian Robinson, Nathaniel J. Schreiber, Kyle Shen, Darrell G. Schlom, I. Božović
Abstract
Significance We have synthesized high-quality thin films of the unconventional superconductor Sr 2 RuO 4 on various substrates using molecular-beam epitaxy. We have measured the angle-resolved transverse resistivity (ARTR), a sensitive indicator of electronic anisotropy. The ARTR signal, heralding the electronic nematicity or a large nematic susceptibility, is present and substantial already at room temperature and grows by an order of magnitude upon cooling down to 4 K. In Sr 2 RuO 4, an unconventional superconducting state emerges out of an unconventional metallic state.
Topics & Concepts
Tetragonal crystal systemCondensed matter physicsAnisotropyOrthorhombic crystal systemElectrical resistivity and conductivitySuperconductivityMaterials scienceDistortion (music)Thin filmPhysicsChemistryCrystallographyCrystal structureOpticsOptoelectronicsNanotechnologyCMOSQuantum mechanicsAmplifierAdvanced Condensed Matter PhysicsPhysics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materials