Structural distortion as prerequisite for superconductivity in LiFeAs

Abstract

The nonadiabatic Heisenberg model predicts a structural distortion in LiFeAs below a temperature higher than (or at least equal to) the superconducting transition temperature. Within this group-theoretical model, the reduction of the symmetry caused by the distortion is a prerequisite for the superconducting state in this compound and can be realized by a mere displacement of the iron atoms from their positions in the space group P4/nmm.

References in corpus (5)

• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Competing Orders and Spin-Density-Wave Instability in La(O${}_{1-x}$F${}_x$)FeAs
• Crystallographic Phase Transition and High-Tc Superconductivity in LaFeAsO:F
• Crystal structure and phase transitions across the metal-superconductor boundary in the SmFeAsO1-xFx (0 < x < 0.20) family

Cited by in corpus (3)

• Group theory of Wannier functions providing the basis for a deeper understanding of magnetism and superconductivity
• Magneto-Transport Properties of Single Crystalline LaFeAsO
• Structural distortion in antiferromagnetic BaFe2As2 as a result of time-inversion symmetry