Iron-based superconductors exhibit unconventional superconducting behavior, which is not explained by the conventional BCS theory.

The majority of iron-based superconductors adopt a tetragonal crystal structure.

Iron-based superconductors typically exhibit critical temperatures in the range of 20-30 K.

Arsenic is a common element used to substitute iron in iron-based superconductors, leading to the formation of iron arsenide superconductors.

Spin fluctuations are considered to be the dominant mechanism responsible for superconductivity in iron-based materials.

Muon spin relaxation is a powerful technique used to investigate the magnetic and superconducting properties of iron-based materials.

The coherence length in iron-based superconductors typically falls in the range of 1-10 nm.

Iron-based superconductors are not commonly used in medical imaging applications.

The brittle nature of iron-based superconducting materials poses a significant challenge in fabricating practical devices.

Japanese scientists were the first to successfully synthesize iron-based superconductors in 2008.

The highest critical temperature achieved in iron-based superconductors is approximately 55 K.

FeSe exhibits the highest critical temperature among the given iron-based superconductors.

The energy gap in iron-based superconductors typically falls in the range of 1-10 meV.

Potassium is not a common impurity found in iron-based superconductors.

Research in the field of iron-based superconductivity encompasses all of the mentioned areas.