Origin of the Resistivity Anisotropy in the Nematic Phase of FeSe

2015/11/15 by M. A. Tanatar, A. E. Böhmer, Erik Timmons +15 · 130 citations
Materials Science · Physics and Astronomy · #Anisotropy #Condensed matter physics #Electrical resistivity and conductivity #Iron-based superconductors research #Liquid crystal #Materials science #Optics #Phase (matter) #Physics #Quantum mechanics #Rare-earth and actinide compounds #Superconductivity #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.117.127001

published in Physical Review Letters 117(12), 127001 (American Physical Society)

arxiv created 2015/11/15 · openalex publication_date 2016/09/16 · arxiv updated 2016/09/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The in-plane resistivity anisotropy is studied in strain-detwinned single crystals of FeSe. In contrast to other iron-based superconductors, FeSe does not develop long-range magnetic order below the tetragonal-to-orthorhombic transition at T_s≈90 K. This allows for the disentanglement of the contributions to the resistivity anisotropy due to nematic and magnetic orders. Comparing direct transport and elastoresistivity measurements, we extract the intrinsic resistivity anisotropy of strain-free samples. The anisotropy peaks slightly below T_s and decreases to nearly zero on cooling down to the superconducting transition. This behavior is consistent with a scenario in which the in-plane resistivity anisotropy is dominated by inelastic scattering by anisotropic spin fluctuations.

Citations

• Tetragonal-to-Orthorhombic Structural Phase Transition at 90 K in the SuperconductorFe1.01Se
• Origin of the Resistive Anisotropy in the Electronic Nematic Phase ofBaFe2As2Revealed by Optical Spectroscopy
• Both Electron and Hole Dirac Cone States inBa(FeAs)2Confirmed by Magnetoresistance
• Antagonistic In-Plane Resistivity Anisotropies from Competing Fluctuations in Underdoped Cuprates
• Emergence of the nematic electronic state in FeSe
• Field-induced superconducting phase of FeSe in the BCS-BEC cross-over
• Anisotropy of Electrical Transport in Pnictide Superconductors Studied Using Monte Carlo Simulations of the Spin-Fermion Model

Cited by

• NMR evidence for static local nematicity and its cooperative interplay with low-energy magnetic fluctuations in FeSe under pressure
• Local nematic susceptibility in stressed BaFe2As2 from NMR electric field gradient measurements