Linear Response Theory for Shear Modulus C66 and Raman Quadrupole Susceptibility: Evidence for Nematic Orbital Fluctuations in Fe-based Superconductors
Hiroshi Kontani, Youichi Yamakawa
DOI 10.1103/PhysRevLett.113.047001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The emergence of the nematic order and fluctuations has been discussed as a central issue in Fe-based superconductors. To clarify the origin of the nematicity, we focus on the shear modulus C66 and the Raman quadrupole susceptibility χx2−y2Raman. Because of the Aslamazov-Larkin vertex correction, the nematic-type orbital fluctuations are induced, and they enhance both 1/C66 and χx2−y2Raman strongly. However, χx2−y2Raman remains finite even at the structure transition temperature TS, because of the absence of the band Jahn-Teller effect and the Pauli (intraband) contribution, as proved in terms of the linear response theory. The present study clarifies that the origin of the nematicity in Fe-based superconductors is the nematic orbital order and fluctuations.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BaFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba(Fe1-xCox)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (Ba1-xKx)Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Fe(Se,Te) Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba(Fe1-xNix)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Anomalous thermodynamic power laws near topological transitions in nodal superconductors
similarity 0.95B. Mazidian et al.
Source status unknown — claims are unverified
Quantum dynamical screening of the local magnetic moment in Fe-based superconductors
similarity 0.95A. Toschi et al.
Source status unknown — claims are unverified
Theory of thermal conductivity in extended-s state superconductors: Application to ferropnictides
similarity 0.95V. Mishra et al.
Source status unknown — claims are unverified
Vortex chains due to nonpairwise interactions and field-induced phase transitions between states with different broken symmetry in superconductors with competing order parameters
similarity 0.95Julien Garaud & Egor Babaev
Source status unknown — claims are unverified
Anisotropic quasiparticle lifetimes in Fe-based superconductors
similarity 0.95A. F. Kemper et al.
Source status unknown — claims are unverified
Impact of local-moment fluctuations on the magnetic degeneracy of iron arsenide superconductors
similarity 0.95Xiaoyu Wang & Rafael M. Fernandes
Source status unknown — claims are unverified