Incoherent c-Axis Interplane Response of the Iron Chalcogenide FeTe0.55Se0.45 Superconductor from Infrared Spectroscopy
S. J. Moon, C. C. Homes, A. Akrap, Z. J. Xu, J. S. Wen, Z. W. Lin, Q. Li, G. D. Gu, D. N. Basov
DOI 10.1103/PhysRevLett.106.217001 · Physical Review Letters
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Abstract
We report on the interplane c-axis electronic response of FeTe0.55Se0.45 investigated by infrared spectroscopy. We find that the normal-state c-axis electronic response of FeTe0.55Se0.45 is incoherent and bears significant similarities to those of mildly underdoped cuprates. The c-axis optical conductivity σc(ω) of FeTe0.55Se0.45 does not display well-defined Drude response at all temperatures. As temperature decreases, σc(ω) is continuously suppressed. The incoherent c-axis response is found to be related to the strong dissipation in the ab-plane transport: a pattern that holds true for various correlated materials as well as FeTe0.55Se0.45.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FeTe0.55Se0.45 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14 | Pressure not reported | unknown |
| FeTe0.55Se0.45 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14 | Pressure not reported | unknown |
| YBa2Cu3O6.90 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6.95 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba0.67K0.33Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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