Signatures of Electronic Nematicity in (111) LaAlO${}_3$/SrTiO${}_3$ Interfaces

Abstract

Symmetry breaking is a fundamental concept in condensed matter physics whose presence often heralds new phases of matter. For instance, the breaking of time reversal symmetry is traditionally linked to magnetic phases in a material, while the breaking of gauge symmetry can lead to superfluidity/superconductivity. Nematic phases are phases in which rotational symmetry is broken while maintaining translational symme- try, and are traditionally associated with liquid crystals. Electronic nematic states where the or- thogonal in-plane crystal directions have different electronic properties have garnered a great deal of attention after their discovery in Sr${}_3$Ru${}_2$O${}_7$, multiple iron based superconductors, and in the superconducting state of CuBiSe. Here we demonstrate the existence of an electronic ne- matic phase in the two-dimensional carrier gas that forms at the (111) LaAlO${}_3$ (LAO)/SrTiO${}_3$ (STO) interface that onsets at low temperatures, and is tunable by an electric field.

arXiv comment6 pages 3 figures

References in corpus (29)

• Valley polarization in MoS2 monolayers by optical pumping
• First observation of Spin-Momentum Helical Locking in Bi2Se3 and Bi2Te3, demonstration of Topological-Order at 300K and a realization of topological-transport-regime
• Magnetic effects at the interface between nonmagnetic oxides
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Symmetry breaking orbital anisotropy on detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
• Coexistence of superconductivity and ferromagnetism in two dimensions
• Nematic and meta-nematic transitions in the iron pnictides
• Formation of a Nematic Fluid at High Fields in Sr3Ru2O7
• Tuning spin-orbit coupling and superconductivity at the SrTiO3/LaAlO3 interface: a magneto-transport study
• Odd-parity topological superconductor with nematic order: Application to CuxBi2Se3
• Topological insulators from complex orbital order in transition-metal oxides heterostructures
• Ferromagnetic exchange, spin-orbit coupling and spiral magnetism at the LaAlO_3/SrTiO_3 interface
• Theory of t2g electron-gas Rashba interactions
• Character of the structural and magnetic phase transitions in the parent and electron doped BaFe2As2 compounds
• Anisotropic magneto-transport effects at SrTiO3\LaAlO3 interfaces
• Control of a two-dimensional electron gas on SrTiO3(111) by atomic oxygen
• Massive symmetry breaking in LaAlO${}_3$/SrTiO${}_3$(111) quantum wells: a three-orbital, strongly correlated generalization of graphene
• The Onset of Anisotropic Transport of Two-Dimensional Electrons in High Landau Levels: An Isotropic-to-Nematic Liquid Crystal Phase Transition?
• Orientational tuning of the Fermi sea of confined electrons at the SrTiO3 (110) and (111) surfaces
• Nature of weak magnetism in SrTiO3/LaAlO3 multilayers
• Six-fold crystalline anisotropic magnetoresistance in the (111) LaAlO${}_3$/SrTiO${}_3$ oxide interface
• Anisotropic transport at the LaAlO3/SrTiO3 interface explained by microscopic imaging of channel-flow over SrTiO3 domains
• Evidence for charge-vortex duality at the LaAlO${}_3$/SrTiO${}_3$ interface
• Selection rules for Cooper pairing in two-dimensional interfaces and sheets
• Gate Tunable In- and Out-Of-Plane Spin-Orbit Coupling and Spin Splitting Anisotropy at LaAlO3/SrTiO3 (110) Interface
• Rotational Isotropy Breaking as Proof for Spin-polarized Cooper Pairs in the Topological Superconductor CuxBi2Se3
• Anisotropic, multi-carrier transport at the (111) LaAlO${}_3$/SrTiO${}_3$ interface
• Magnetoresistance in the superconducting state at the (111) LaAlO${}_3$/SrTiO${}_3$ interface
• Orbital and spin order in oxide two-dimensional electron gases

Cited by in corpus (7)

• Magnetic and electronic properties at the gamma-Al2O3/SrTiO3 interface
• Symmetry and correlation effects on band structure explain the anomalous transport properties of (111) LaAlO${}_3$/SrTiO${}_3$
• Superconductivity and Frozen Electronic States at the (111) LaAlO${}_3$/SrTiO${}_3$ Interface
• Anisotropic Magnetoresistance in Multiband Systems: 2DEGs and Polar Metals at Oxide Interfaces
• Low temperature magnetoresistance of (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35}$)/SrTiO${}_3$
• Strong spin-orbit coupling and magnetism in (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35})$/SrTiO${}_3$
• Orbital homology of p and t2g orbitals in models and materials