Non-local $d_{xy}$ nematicity and the missing electron pocket in FeSe

Abstract

The origin of spontaneous electronic nematic ordering provides important information for understanding iron-based superconductors. Here, we analyze a scenario where the $d_{xy}$ orbital strongly contributes to nematic ordering in FeSe. We show that the addition of $d_{xy}$ nematicity to a pure $d_{xz}/d_{yz}$ order provides a natural explanation for the unusual Fermi surface and correctly reproduces the strongly anisotropic momentum dependence of the superconducting gap. We predict a Lifshitz transition of an electron pocket mediated by temperature and sulphur doping, whose signatures we discuss by analysing available experimental data. We present the variation of momentum dependence of the superconducting gap upon suppression of nematicity. Our quantitatively accurate model yields the transition from tetragonal to nematic FeSe and the FeSe${}_{1-x}$S${}_x$ series, and puts strong constraints on possible nematic mechanisms.

References in corpus (66)

• Unconventional sign-reversing superconductivity in LaFeAsO_(1-x)F_x
• Nematic order in iron superconductors - who is in the driver's seat?
• Gap symmetry and structure of Fe-based superconductors
• Near-degeneracy of several pairing channels in multiorbital models for the Fe-pnictides
• Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides
• Ferro-Orbital Order and Strong Magnetic Anisotropy in the Parent Compounds of Iron-Pnictide Superconductors
• Discovery of Orbital-Selective Cooper Pairing in FeSe
• Emergence of the nematic electronic state in FeSe
• Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor
• Strong Interplay between Stripe Spin Fluctuations, Nematicity and Superconductivity in FeSe
• Theoretical evidence for strong correlations and incoherent metallic state in FeSe
• Lack of coupling between superconductivity and orthorhombic distortion in stoichiometric single-crystalline FeSe
• Nematicity, magnetism and superconductivity in FeSe
• The key ingredients of the electronic structure of FeSe
• Space group symmetry, spin-orbit coupling and the low energy effective Hamiltonian for iron based superconductors
• Observation of two distinct $d_{xz}/d_{yz}$ band splittings in FeSe
• Orbital selective pairing and gap structures of iron-based superconductors
• Exotic Superconducting States in FeSe-based Materials
• On the Remarkable Superconductivity of FeSe and its Close Cousins
• Momentum-dependent sign-inversion of orbital polarization in superconducting FeSe
• Origin of the Resistivity Anisotropy in the Nematic Phase of FeSe
• Evidence for unidirectional nematic bond ordering in FeSe
• Orbital-dependent Fermi Surface shrinking as a fingerprint of nematicity in FeSe
• Suppression of orbital ordering by chemical pressure in FeSe1-xSx
• Two distinct superconducting pairing states divided by the nematic end point in FeSe${}_{1-x}$S${}_x$
• Highly Anisotropic Superconducting Gap in Nematically Ordered and Tetragonal Phases of FeSe${}_{1-x}$S${}_x$
• Evolution of the Fermi surface of the nematic superconductors FeSe1-xSx
• Formation of Hubbard-like bands as a fingerprint of strong electron-electron interactions in FeSe
• Suppression of electronic correlations by chemical pressure from FeSe to FeS
• Interatomic Coulomb interaction and electron nematic bond order in FeSe
• Anisotropic spin fluctuations in detwinned FeSe
• Effect of nematic ordering on electronic structure of FeSe
• Highly anisotropic and two-fold symmetric superconducting gap in nematically ordered FeSe${}_{0.93}$S${}_{0.07}$
• Model of Electronic Structure and Superconductivity in Orbitally Ordered FeSe
• Electronic anisotropies revealed by detwinned ARPES measurements of FeSe
• Quenched nematic criticality separating two superconducting domes in an iron-based superconductor under pressure
• Distinguishing spin-orbit coupling and nematic order in the electronic spectrum of iron-based superconductors
• Momentum Dependence of the Nematic Order Parameter in Iron-Based Superconductors
• Nematic Pairing from Orbital Selective Spin Fluctuations in FeSe
• Superconductivity in FeSe: the role of nematic order
• 3D superconducting gap in FeSe from ARPES
• Spin excitations in a model of FeSe with orbital ordering
• Scaling of the superconducting gap with orbital character in FeSe
• Interplay between magnetism, superconductivity, and orbital order in a 5-pocket model for iron-based superconductors - a parquet renormalization group study
• Lifted electron pocket and reversed orbital occupancy imbalance in FeSe
• Anomalous temperature evolution of the electronic structure of FeSe
• Competing instabilities, orbital ordering and splitting of band degeneracies from a parquet renormalization group analysis of a 4-pocket model for iron-based superconductors: application to FeSe
• Orbital selectivity in electron correlations and superconducting pairing of iron-based superconductors
• Orbital-selective superconductivity in the nematic phase of FeSe
• Revealing the single electron pocket of FeSe in a single orthorhombic domain
• Strongly enhanced temperature dependence of the chemical potential in FeSe
• Time-reversal symmetry-breaking nematic superconductivity in FeSe
• Revisit of the Orbital-Fluctuation-Mediated Superconductivity in LiFeAs: Nontrivial Spin-Orbit Interaction Effects on the Bandstructure and Superconducting Gap Function
• Shifts and Splittings of the Hole Bands in the Nematic Phase of FeSe
• Superconductivity without hole-pocket in electron-doped FeSe: Analysis beyond the Migdal-Eliashberg formalism
• Itinerant approach to magnetic neutron scattering of FeSe: effect of orbital selectivity
• Classification of Symmetry Derived Pairing at M Point in FeSe
• Electronic nematicity in FeSe: a first-principles perspective
• $k_z$ selective scattering within Quasiparticle Interference measurements of FeSe
• Orbital transmutation and the electronic spectrum of FeSe in the nematic phase
• Inter-orbital nematicity and the origin of a single electron Fermi pocket in FeSe
• Electronic structure properties in the nematic phases of FeSe
• Momentum-resolved measurement of electronic nematic susceptibility in the FeSe${}_{0.9}$S${}_{0.1}$ superconductor
• Anomalous spectral weight transfer in the nematic state of iron-selenide superconductor
• Nematic Fluctuations in an Orbital Selective Superconductor Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• The effect of spin fluctuations on the electronic structure in iron based superconductors

Cited by in corpus (16)

• Thermodynamics of transition to BCS-BEC crossover superconductivity in FeSe${}_{1-x}$S${}_x$
• A Rigorous Formalism of Unconventional Symmetry Breaking in Fermi Liquid Theory and Its Application to Nematicity in FeSe
• Superconductivity Mediated by Nematic Fluctuations in Tetragonal $\text{Fe}{\text{Se}}_{1-x}{\text{S}}_x$
• FeSe and the missing electron pocket problem
• Pure nematic state in iron-based superconductor
• Electronic Stripe Patterns Near the Fermi Level of Tetragonal Fe(Se,S)
• Multipolar nematic state of nonmagnetic FeSe based on the DFT+$U$
• Magnetic-Field-Induced Spin Nematicity in FeSe1-xSx and FeSe1-yTey Superconductor Systems
• Resurgence of superconductivity and the role of $d_{xy}$ hole band in FeSe${}_{1-x}$Te${}_x$
• Theory of spin-excitation anisotropy in the nematic phase of FeSe obtained from RIXS measurements
• Probing the topological character of superconductors via non-local Hanbury-Brown and Twiss correlations
• Diverse Exotic Orders and Fermiology in Fe-based Superconductors: A Unified Mechanism for $B_{1g}/B_{2g}$ Nematicity in FeSe/(Cs,Rb)Fe${}_2$As${}_2$ and Smectic Order in BaFe${}_2$As${}_2$
• Resistivity anisotropy from the multiorbital Boltzmann equation in nematic FeSe
• Feedback of non-local $d_{xy}$ nematicity on the magnetic anisotropy in FeSe
• Symmetry-breaking-induced topology in FeSe
• Specific Heat and the gap structure of a Nematic Superconductor, application to FeSe