Study of magnetic excitation spectra of several Fe-pnictide systems

Lattice distortion and stripelike antiferromagnetic order inCa10(Pt3As8)(Fe2Sapkota1, Tucker2, Ramazanoglu3 et al. 2014Phys. Rev. B151240View full textAdd to dashboardCite

“…For example, angle-resolved photoemission studies supported by band-structure and phonon-spectra calculations have shown that the electronic structure is quite similar to that observed for BaFe 2 As 2 . [16][17][18][19][20] Inelastic neutron scattering measurements on large single crystals 21,22 demonstrated that magnetic fluctuations occur at the same stripe-like antiferromagnetic wave vector as observed in other Fe-based high-temperature superconductors. However, no indication of magnetic order could be found -likely related to the high Pt content 21,22 and the reported inhomogeneity in one of the samples.…”

“…[16][17][18][19][20] Inelastic neutron scattering measurements on large single crystals 21,22 demonstrated that magnetic fluctuations occur at the same stripe-like antiferromagnetic wave vector as observed in other Fe-based high-temperature superconductors. However, no indication of magnetic order could be found -likely related to the high Pt content 21,22 and the reported inhomogeneity in one of the samples. 22 Furthermore, in resistance measurements on Ca 10 (Pt 3 As 8 )(Fe 2 As 2 ) 5 single crystals, Ni et al 10 and Gao et al 12 found two features that they interpreted as a structural transition at T 1 = 103 K and a magnetic transition at T 2 = 95 K. The presence of a structural transition is consistent with the observation of domain patterns in polarized-light images due to a lowering of the lattice symmetry at low temperatures, 7 and recent high-resolution x-ray diffraction experiments on powder samples.…”

Lattice distortion and stripe-like antiferromagnetic order in Ca10(Pt3As8)(Fe2As2)5

“…For example, angle-resolved photoemission studies supported by band-structure and phonon-spectra calculations have shown that the electronic structure is quite similar to that observed for BaFe 2 As 2 . [16][17][18][19][20] Inelastic neutron scattering measurements on large single crystals 21,22 demonstrated that magnetic fluctuations occur at the same stripe-like antiferromagnetic wave vector as observed in other Fe-based high-temperature superconductors. However, no indication of magnetic order could be found -likely related to the high Pt content 21,22 and the reported inhomogeneity in one of the samples.…”

“…[16][17][18][19][20] Inelastic neutron scattering measurements on large single crystals 21,22 demonstrated that magnetic fluctuations occur at the same stripe-like antiferromagnetic wave vector as observed in other Fe-based high-temperature superconductors. However, no indication of magnetic order could be found -likely related to the high Pt content 21,22 and the reported inhomogeneity in one of the samples. 22 Furthermore, in resistance measurements on Ca 10 (Pt 3 As 8 )(Fe 2 As 2 ) 5 single crystals, Ni et al 10 and Gao et al 12 found two features that they interpreted as a structural transition at T 1 = 103 K and a magnetic transition at T 2 = 95 K. The presence of a structural transition is consistent with the observation of domain patterns in polarized-light images due to a lowering of the lattice symmetry at low temperatures, 7 and recent high-resolution x-ray diffraction experiments on powder samples.…”