Although the existence of nematic order in iron-based superconductors is now a well-
established experimental fact, its origin remains controversial. Nematic order breaks the …

High-transition temperature (high-T c) superconductivity in the iron pnictides or
chalcogenides emerges from the suppression of the static antiferromagnetic order in their …

Iron-based superconductors are well known for their complex interplay between structure,
magnetism and superconductivity. FeSe offers a particularly fascinating example. This …

Starting from a microscopic itinerant model, we derive and analyze the effective low-energy
model for collective magnetic excitations in the iron pnictides. We show that the stripe …

The coupling between superconductivity and orthorhombic distortion is studied in vapor-
grown FeSe single crystals using high-resolution thermal-expansion measurements. In …

The parent phases of the Fe-arsenide superconductors harbor an antiferromagnetic ground
state. Significantly, the Néel transition is either preceded or accompanied by a structural …

Understanding the microscopic origins of electronic phases in high-transition temperature
(high-T c) superconductors is important for elucidating the mechanism of superconductivity …

We investigate how emergent nematic order and nematic fluctuations affect several
macroscopic properties of both the normal and superconducting states of the iron pnictides …

A hallmark of the iron-based superconductors is the strong coupling between magnetic,
structural and electronic degrees of freedom. However, a universal picture of the normal …

The presence of dxz-dyz orbital ordering is often considered a hallmark of the nematic
phase of Fe-based superconductors, including FeSe, but the details of the order parameter …