Phonons of Fe-based superconductor Ca10Pt4As8(Fe1−xPtxAs)10

Phonons of Fe-based superconductor Ca10Pt4As8(Fe1−xPtxAs)10

We report the results of inelastic neutron scattering measurements on particular phonons of a superconducting (SC) Ca10Pt4As8(Fe1−xPtxAs)10 with the onset transition temperature Tc ~ 33 K to investigate mainly what roles orbital fluctuation plays in Cooper pairing, where we observed a slight softeni...

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Veröffentlicht in:Journal of physics. Condensed matter 2015-10, Vol.27 (46), p.465701-465701
Hauptverfasser: Ikeuchi, K, Kobayashi, Y, Suzuki, K, Itoh, M, Kajimoto, R, Bourges, P, Christianson, A D, Nakamura, H, Machida, M, Sato, M
Format: Artikel
Sprache:eng
Schlagworte:
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Fe-based superconductors
inelastic neutron scattering
superconducting symmetry
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Zusammenfassung:We report the results of inelastic neutron scattering measurements on particular phonons of a superconducting (SC) Ca10Pt4As8(Fe1−xPtxAs)10 with the onset transition temperature Tc ~ 33 K to investigate mainly what roles orbital fluctuation plays in Cooper pairing, where we observed a slight softening of the in-plane transverse acoustic mode corresponding to the elastic constant C66. This softening starts at temperature T well above the SC Tc, as T decreases. An anomalously strong change of the scattering intensity of in-plane optical modes was observed at the M point of the pseudo tetragonal reciprocal space in the range of 35  
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/27/46/465701