Nematic orders in Iron-based superconductors

Understand

In the newly discovered iron-based superconductors, many experiments have demonstrated the existence of the rotational symmetry breaking nematic order, which has been a prevailing phenomenon in many correlated electronic systems.

• In this paper, we review nematic behaviors in iron-pnictides and the mechanism behind the development of the nematic order.
• We discuss evidences that support the spin-driven nematicity in iron-pnictides.
• Theories, results and predictions will be discussed based on this picture.