Nematicity and nematic fluctuations in iron-based superconductors

AE Böhmer, JH Chu, S Lederer, M Yi - Nature Physics, 2022 - nature.com
The spontaneous reduction of rotational symmetry in a crystalline solid driven by an
electronic mechanism is referred to as electronic nematicity. This phenomenon—initially …

Exotic superconducting states in FeSe-based materials

T Shibauchi, T Hanaguri, Y Matsuda - Journal of the Physical Society …, 2020 - journals.jps.jp
High-temperature superconductivity and a wide variety of exotic superconducting states
discovered in FeSe-based materials have been at the frontier of research on condensed …

Two distinct superconducting pairing states divided by the nematic end point in FeSe1−xSx

T Hanaguri, K Iwaya, Y Kohsaka, T Machida… - Science …, 2018 - science.org
Unconventional superconductivity often competes or coexists with other electronic orders. In
iron-based superconductors, a central issue has been the relationship between …

Discovery of mesoscopic nematicity wave in iron-based superconductors

T Shimojima, Y Motoyui, T Taniuchi, C Bareille, S Onari… - Science, 2021 - science.org
Nematicity is ubiquitous in the electronic phases of iron-based superconductors. The order
parameter that characterizes the nematic phase has been investigated in momentum space …

Terahertz pulse-driven collective mode in the nematic superconducting state of Ba1−xKxFe2As2

R Grasset, K Katsumi, P Massat, HH Wen… - NPJ Quantum …, 2022 - nature.com
We investigate the collective mode response of the iron-based superconductor Ba1− x K x
Fe2As2 using intense terahertz (THz) light. In the superconducting state a THz Kerr signal is …

Local orthorhombic lattice distortions in the paramagnetic tetragonal phase of superconducting NaFe1−xNixAs

W Wang, Y Song, C Cao, KF Tseng, T Keller… - Nature …, 2018 - nature.com
Understanding the interplay between nematicity, magnetism and superconductivity is pivotal
for elucidating the physics of iron-based superconductors. Here we use neutron scattering to …

Nematic transitions in iron pnictide superconductors imaged with a quantum gas

F Yang, SF Taylor, SD Edkins, JC Palmstrom… - Nature Physics, 2020 - nature.com
Abstract The Scanning Quantum Cryogenic Atom Microscope (SQCRAMscope) uses an
atomic Bose–Einstein condensate to measure magnetic fields emanating from solid-state …

Hidden antiferronematic order in Fe-based superconductor and NaFeAs above

S Onari, H Kontani - Physical Review Research, 2020 - APS
In several Fe-based superconductors, slight C 4 symmetry breaking occurs at T*, which is
tens of degrees Kelvin higher than the structural transition temperature TS. In this “hidden” …

Defect-induced electronic smectic state at the surface of nematic materials

A Lahiri, A Klein, RM Fernandes - Physical Review B, 2022 - APS
Due to the intertwining between electronic nematic and elastic degrees of freedom, lattice
defects and structural inhomogeneities commonly found in crystals can have a significant …

Coherence Length of Electronic Nematicity in Iron-Based Superconductors

Y Kageyama, A Onishi, C Bareille, K Ishida… - Journal of the Physical …, 2024 - journals.jps.jp
Recent developments in laser-excited photoemission electron microscopy (laser-PEEM)
advance the visualization of electronic nematicity and nematic domain structures in iron …