Revealing the single electron pocket of FeSe in a single orthorhombic domain

Abstract

We measure the electronic structure of FeSe from within individual orthorhombic domains. Enabled by an angle-resolved photoemission spectroscopy beamline with a highly focused beamspot (nano-ARPES), we identify clear stripe-like orthorhombic domains in FeSe with a length scale of approximately 1-5~$\mu$m. Our photoemission measurements of the Fermi surface and band structure within individual domains reveal a single electron pocket at the Brillouin zone corner. This result provides clear evidence for a one-electron pocket electronic structure of FeSe, observed without the application of uniaxial strain, and calls for further theoretical insight into this unusual Fermi surface topology. Our results also showcase the potential of nano-ARPES for the study of correlated materials with local domain structures.

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Cited by in corpus (22)

• On the Remarkable Superconductivity of FeSe and its Close Cousins
• Exotic Superconducting States in FeSe-based Materials
• Nanoscale decoupling of electronic nematicity and structural anisotropy in FeSe thin films
• Electronic nematic states tuned by isoelectronic substitution in bulk FeSe1-xSx
• Strain-tuning of nematicity and superconductivity in single crystals of FeSe
• The relationship between transport anisotropy and nematicity in FeSe
• Unconventional density waves and superconductivities in Fe-based superconductors and other strongly correlated electron systems
• Non-local $d_{xy}$ nematicity and the missing electron pocket in FeSe
• Singular magnetic anisotropy in the nematic phase of FeSe
• Spontaneous orbital polarization in the nematic phase of FeSe
• Inter-orbital nematicity and the origin of a single electron Fermi pocket in FeSe
• FeSe and the missing electron pocket problem
• Role of nematicity in controlling spin fluctuations and superconducting Tc in bulk FeSe
• Relationships between Superconductivity and Nematicity in FeSe${}_{1-x}$Te${}_x$ ($x=0-0.5$) Films Studied by Complex Conductivity Measurements
• Spatially-resolved electronic structure of stripe domains in IrTe${}_2$ through electronic structure microscopy
• Nanoscale visualization of the thermally-driven evolution of antiferromagnetic domains in FeTe thin films
• Multi-Atom Quasiparticle Scattering Interference for Superconductor Energy-Gap Symmetry Determination
• Resurgence of superconductivity and the role of $d_{xy}$ hole band in FeSe${}_{1-x}$Te${}_x$
• Inhomogeneous superconductivity onset in FeSe studied by transport properties
• Strong surface termination dependence of the electronic structure of polar superconductor LaFeAsO revealed by nano-ARPES
• Energy-Resolved Real-Space Imaging of Orbital Nematicity in an Fe-Based Superconductor
• Specific Heat and the gap structure of a Nematic Superconductor, application to FeSe