Effect of spin-orbit interaction on the vortex dynamics in LaAlO${}_3$/SrTiO${}_3$ interfaces near the superconducting transition

Abstract

Controlling spin-orbit interaction and its effect on superconductivity has been a long-standing problem in two-dimensional inversion symmetry broken superconductors. An open challenge is to understand the role of various energy scales in shaping the complex phase diagram in these systems. From a combined experimental and theoretical study of resistance fluctuations and its higher order statistics, we propose a phase diagram for the superconducting phase in the magnetic-field--spin orbit interaction energy plane for the quasi-two dimensional electron gas at the interface of LaAlO${}_3$/SrTiO${}_3$ heterostructures. The relative variance of resistance fluctuations increases by few orders of magnitude below the spin-orbit field B${}_{SO}$ and a non-Gaussian component to the fluctuations arises for fields below the upper critical field B${}_{C2}$. Theoretical calculations show that the non-Gaussian noise predominantly arises due to percolative nature of the superconducting transition. We quantify the strength and the relative importance of the spin-orbit interaction energy, Zeeman energy and the pairing potential. Our work highlights the important role played by the interplay between these energy scales in framing the fascinating phases seen in two-dimensional inversion-symmetry-broken superconductors.

arXiv comment9 pages, 11 figures

References in corpus (33)

• Evidence of Ising pairing in superconducting NbSe${}_2$ atomic layers
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Tunable Rashba spin-orbit interaction at oxide interfaces
• Superconducting 2D system with lifted spin degeneracy: Mixed singlet-triplet state
• Heavy-fermion superconductivity in CeCoIn5 at 2.3K
• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• Tuning spin-orbit coupling and superconductivity at the SrTiO3/LaAlO3 interface: a magneto-transport study
• Theory of spin-orbit coupling at LaAlO3/SrTiO3 interfaces and SrTiO3 surfaces
• A Universal Critical Density Underlying the Physics of Electrons at the LaAlO3/SrTiO3 Interface
• Scanning Tunneling Spectroscopy and Vortex Imaging in the Iron-Pnictide Superconductor BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$
• CePt3Si: an unconventional superconductor without inversion center
• Superconductivity and Ferromagnetism in Oxide Interface Structures: Possibility of Finite Momentum Pairing
• Theory of 2D superconductor with broken inversion symmetry
• Inhomogeneous LOFF phase revisited for surface superconductivity
• Broadening of the Beresinkii-Kosterlitz-Thouless superconducting transition by inhomogeneity and finite-size effects
• Intrinsic instability of electronic interfaces with strong Rashba coupling
• Link between the Superconducting Dome and Spin-Orbit Interaction in the (111) LaAlO${}_3$/SrTiO${}_3$ Interface
• Dynamic Scaling of Magnetic Flux Noise Near the KTB Transition in Overdamped Josephson Junction Arrays
• Probing long-range correlations in the Berezinskii-Kosterlitz-Thouless fluctuation regime of ultra-thin NbN superconducting films using transport noise measurements
• Topological superconductivity and Majorana bound states at the LaAlO${}_3$/SrTiO${}_3$ interface
• 1/ω-flux-noise and dynamical critical properties of two-dimensional XY-models
• Spin fluctuations and superconductivity in noncentrosymmetric heavy fermion systems CeRhSi${}_3$ and CeIrSi${}_3$
• Correlated Non-Gaussian phase fluctuations in LaAlO${}_3$/SrTiO${}_3$ heterointerface
• Enhanced spin-orbit coupling and charge carrier density suppression in LaAl1-xCrxO3/SrTiO3 heterointerfaces
• Multi-band theory of superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Theory on Superconductivity of CeIn3 in Heavy Fermion System
• Flux noise and Fluctuation conductivity in Unfrustrated Josephson Junction Arrays
• Oxygen-vacancy clustering and pseudogap behaviour at LaAlO3/SrTiO3 interface
• Probing a spin-glass state in SrRuO3 thin films through higher-order statistics of resistance fluctuations
• Phase segregation of superconductivity and ferromagnetism at LaAlO${}_3$/SrTiO${}_3$ interface
• Non-Gaussian resistance noise in the ferromagnetic insulating state of a hole doped manganite
• Observation of transient superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Effect of multiband transport on charge carrier density fluctuations at the LaAlO${}_3$/SrTiO${}_3$ interface

Cited by in corpus (2)

• Hidden electronic phase in strained few-layer 1T-TaS2
• Exploring the Electronic Nature of Spinel Oxides: A Review of Their Electron Interactions and Prospects