Vector field controlled vortex lattice symmetry in LiFeAs

Abstract

We utilize a combination of vector magnetic field and scanning tunneling microscopy to elucidate the 3D field-based electronic phase diagram of a correlated iron-based superconductor, LiFeAs. We observe, under a zero-field-cooled method, an ordered hexagonal vortex lattice ground-state in contrast to the disordered lattice observed under a field-cooled method. It transforms into a four-fold-symmetric state by increasing c-axis field and distorts elliptically upon tilting the field in-plane. The vortex lattice transformations correlate with the field dependent superconducting gap that characterizes the Cooper pairing strength. The anisotropy of the vortex lattice agrees with the field enhanced Bogoliubov quasiparticle scattering channel that is determined by the pairing symmetry with respect to its Fermi surface structure. Our systematic tuning of the vortex lattice symmetry and study of its correlation with Cooper pairing demonstrates the many-body interplay between the superconducting order parameter and emergent vortex matter.

References in corpus (25)

• Superconductivity in Iron Compounds
• Gap symmetry and structure of Fe-based superconductors
• Theory of Intertwined Orders in High Temperature Superconductors
• Scanning tunneling spectroscopy of high-temperature superconductors
• Reply to Comment on "Unconventional s-wave superconductivity in Fe(Se,Te)"
• Negative flat band magnetism in a spin-orbit coupled correlated kagome magnet
• Giant and anisotropic many-body spin-orbit tunability in a strongly correlated kagome magnet
• Superconductivity without magnetism in LiFeAs
• Spectroscopic scanning tunneling microscopy insights into Fe-based superconductors
• Anisotropic Energy Gaps of Iron-based Superconductivity from Intra-band Quasiparticle Interference in LiFeAs
• Unconventional Anisotropic s-Wave Superconducting Gaps of LiFeAs Iron-Pnictide Superconductor
• Field dependence of the vortex structure in d-wave and s-wave superconductors
• Scanning Tunneling Microscopy/Spectroscopy of Vortices in LiFeAs
• Effects of correlation in LiFeAs
• Scanning tunneling spectroscopy of superconducting LiFeAs single crystals: Evidence for two nodeless energy gaps and coupling to a bosonic mode
• Weak superconducting pairing and a single isotropic energy gap in stoichiometric LiFeAs
• Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review
• Determination of the Upper Critical Field of a Single Crystal LiFeAs: The Magnetic Torque Study up to 35 Tesla
• Vortex states in hole-doped iron-pnictide superconductors
• Theory of quasiparticle vortex bound states in Fe-based superconductors: application to LiFeAs
• Simultaneous Evidence for Pauli Paramagnetic Effects and Multiband Superconductivity in KFe${}_2$As${}_2$ by Small-Angle Neutron Scattering Studies of the Vortex Lattice
• Electronic vortex structure of Fe-based superconductors: application to LiFeAs
• Vortex lattice studies in CeCoIn5 with H perpendicular to c
• Anisotropy and multiband superconductivity in Sr2RuO4
• Signatures of unconventional pairing in near-vortex electronic structure of LiFeAs

Cited by in corpus (12)

• Probing topological quantum matter with scanning tunnelling microscopy
• Ordered and tunable Majorana-zero-mode lattice in naturally strained LiFeAs
• Crystalline symmetry protected helical Majorana modes in the iron pnictides
• Field-free platform for topological zero-energy mode in superconductors LiFeAs and PbTaSe${}_2$
• Competing Vortex Topologies in Iron-based Superconductors
• Quantum phase transition of correlated iron-based superconductivity in LiFe${}_{1-x}$Co${}_x$As
• Disordered hyperuniform vortex matter with rhombic distortions in FeSe at low fields
• Disordered hyperuniformity in superconducting vortex lattices
• Orbital selectivity of layer resolved tunneling on iron superconductor Ba0.6K0.4Fe2As2
• Vortex structure deformation of rotating Lifshitz Holographic Superconductors
• Absence of hexagonal to square structural transition in LiFeAs vortex matter
• Exploring the vortex phase diagram of Bogoliubov-de Gennes disordered superconductors