Incoherent c-axis interplane response of the iron chalcogenide FeTe 0.55Se0.45 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

Incoherent c-axis interplane response of the iron chalcogenide FeTe _0.55Se_0.45 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

Physics and Astronomy

University of California at San Diego
Brookhaven National Laboratory Condensed Matter Physics and Materials Science Department

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

We report on the interplane c-axis electronic response of FeTe _0.55Se_0.45 investigated by infrared spectroscopy. We find that the normal-state c-axis electronic response of FeTe_0.55Se _0.45 is incoherent and bears significant similarities to those of mildly underdoped cuprates. The c-axis optical conductivity σ _c(ω) of FeTe_0.55Se_0.45 does not display well-defined Drude response at all temperatures. As temperature decreases, σ_c(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 FeTe_0.55Se_0.45.

Original language	English
Article number	217001
Journal	Physical Review Letters
Volume	106
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.106.217001
State	Published - May 23 2011

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title = "Incoherent c-axis interplane response of the iron chalcogenide FeTe 0.55Se0.45 superconductor from infrared spectroscopy",

abstract = "We report on the interplane c-axis electronic response of FeTe 0.55Se0.45 investigated by infrared spectroscopy. We find that the normal-state c-axis electronic response of FeTe0.55Se 0.45 is incoherent and bears significant similarities to those of mildly underdoped cuprates. The c-axis optical conductivity σ c(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.",

author = "Moon, \{S. J.\} and Homes, \{C. C.\} and A. Akrap and Xu, \{Z. J.\} and Wen, \{J. S.\} and Lin, \{Z. W.\} and Q. Li and Gu, \{G. D.\} and Basov, \{D. N.\}",

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doi = "10.1103/PhysRevLett.106.217001",

language = "English",

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T1 - Incoherent c-axis interplane response of the iron chalcogenide FeTe 0.55Se0.45 superconductor from infrared spectroscopy

AU - Moon, S. J.

AU - Homes, C. C.

AU - Akrap, A.

AU - Xu, Z. J.

AU - Wen, J. S.

AU - Lin, Z. W.

AU - Li, Q.

AU - Gu, G. D.

AU - Basov, D. N.

PY - 2011/5/23

Y1 - 2011/5/23

N2 - We report on the interplane c-axis electronic response of FeTe 0.55Se0.45 investigated by infrared spectroscopy. We find that the normal-state c-axis electronic response of FeTe0.55Se 0.45 is incoherent and bears significant similarities to those of mildly underdoped cuprates. The c-axis optical conductivity σ c(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.

AB - We report on the interplane c-axis electronic response of FeTe 0.55Se0.45 investigated by infrared spectroscopy. We find that the normal-state c-axis electronic response of FeTe0.55Se 0.45 is incoherent and bears significant similarities to those of mildly underdoped cuprates. The c-axis optical conductivity σ c(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.

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DO - 10.1103/PhysRevLett.106.217001

M3 - Article

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JF - Physical Review Letters

IS - 21

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ER -

Incoherent c-axis interplane response of the iron chalcogenide FeTe _0.55Se_0.45 superconductor from infrared spectroscopy

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