[HTML][HTML] On the remarkable superconductivity of FeSe and its close cousins

A Kreisel, PJ Hirschfeld, BM Andersen - Symmetry, 2020 - mdpi.com
Emergent electronic phenomena in iron-based superconductors have been at the forefront
of condensed matter physics for more than a decade. Much has been learned about the …

Superconductivity in nickel-based 112 systems

Q Gu, HH Wen - The Innovation, 2022 - cell.com
Superconductivity has been discovered recently in infinite-layer nickel-based 112 thin films
R 1− x A x NiO 2 (R= La, Nd, Pr and A= Sr, Ca). They are isostructural to the infinite-layer …

Nematic energy scale and the missing electron pocket in FeSe

M Yi, H Pfau, Y Zhang, Y He, H Wu, T Chen, ZR Ye… - Physical Review X, 2019 - APS
Superconductivity emerges in proximity to a nematic phase in most iron-based
superconductors. It is therefore important to understand the impact of nematicity on the …

Anisotropic spin fluctuations in detwinned FeSe

T Chen, Y Chen, A Kreisel, X Lu, A Schneidewind… - Nature materials, 2019 - nature.com
Superconductivity in FeSe emerges from a nematic phase that breaks four-fold rotational
symmetry in the iron plane. This phase may arise from orbital ordering, spin fluctuations or …

Light-induced enhancement of superconductivity in iron-based superconductor FeSe0.5Te0.5

K Isoyama, N Yoshikawa, K Katsumi, J Wong… - Communications …, 2021 - nature.com
Illumination of light on matter normally causes heating and destroys the ordered ground
states. Despite this common understanding, recent advances in ultrafast light sources have …

Highly anisotropic superconducting gap near the nematic quantum critical point of FeSe1−xSx

PK Nag, K Scott, VS de Carvalho, JK Byland, X Yang… - Nature Physics, 2024 - nature.com
Nematic phases, in which electrons in a solid spontaneously break rotational symmetry
while preserving translational symmetry, exist in several families of unconventional …

Electronic Nematic States Tuned by Isoelectronic Substitution in Bulk FeSe1−x S x

AI Coldea - Frontiers in Physics, 2021 - frontiersin.org
Isoelectronic substitution is an ideal tuning parameter to alter electronic states and
correlations in iron-based superconductors. As this substitution takes place outside the …

Eliminating orbital selectivity from the metal-insulator transition by strong magnetic fluctuations

EA Stepanov - Physical Review Letters, 2022 - APS
The orbital-selective electronic behavior is one of the most remarkable manifestations of
strong electronic correlations in multiorbital systems. A prominent example is the orbital …

Iron-based superconductors: Teenage, complex, challenging

Q Si, NE Hussey - Physics Today, 2023 - pubs.aip.org
In a mater of weeks after the meeting, substitutional studies had helped to repeatedly break
the Tc record, which eventually plateaued at 56 K. As a barometer of the excitement, by the …

Unconventional superconductivity near a nematic instability in a multi-orbital system

KR Islam, A Chubukov - npj Quantum Materials, 2024 - nature.com
We analyze superconductivity in a multi-orbital fermionic system near the onset of a nematic
order, using doped FeSe as an example. We associate nematicity with spontaneous …