Ultrafast mid-infrared response of YBa2Cu3O(7-δ)

R. A. Kaindl; M. Woerner; T. Elsaesser; D. C. Smith; J. F. Ryan; G. A. Farnan; M. P. McCurry; D. G. Walmstey

doi:10.1126/science.287.5452.470

Ultrafast mid-infrared response of YBa₂Cu₃O(7-δ)

R. A. Kaindl, M. Woerner, T. Elsaesser, D. C. Smith, J. F. Ryan, G. A. Farnan, M. P. McCurry, D. G. Walmstey

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

173 Scopus citations

Abstract

Optical spectra of high-transition-temperature superconductors in the midinfrared display a gap of in-plane conductivity whose role for superconductivity remains unresolved. Femtosecond measurements of the mid- infrared reflectivity of YBa₂Cu₃O(7-δ) after nonequilibrium optical excitation are used to demonstrate the ultrafast fill-in of this gap and reveal two gap constituents: a picosecond recovery of the superconducting condensate in underdoped and optimally doped material and, in underdoped YBa₂Cu₃O(7-δ), an additional subpicosecond component related to pseudogap correlations. The temperature-dependent amplitudes of both contributions correlate with the antiferromagnetic 41-millielectronvolt peak in neutron scattering, supporting the coupling between charges and spin excitations.

Original language	English (US)
Pages (from-to)	470-473
Number of pages	4
Journal	Science
Volume	287
Issue number	5452
DOIs	https://doi.org/10.1126/science.287.5452.470
State	Published - Jan 21 2000
Externally published	Yes

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title = "Ultrafast mid-infrared response of YBa2Cu3O(7-δ)",

abstract = "Optical spectra of high-transition-temperature superconductors in the midinfrared display a gap of in-plane conductivity whose role for superconductivity remains unresolved. Femtosecond measurements of the mid- infrared reflectivity of YBa2Cu3O(7-δ) after nonequilibrium optical excitation are used to demonstrate the ultrafast fill-in of this gap and reveal two gap constituents: a picosecond recovery of the superconducting condensate in underdoped and optimally doped material and, in underdoped YBa2Cu3O(7-δ), an additional subpicosecond component related to pseudogap correlations. The temperature-dependent amplitudes of both contributions correlate with the antiferromagnetic 41-millielectronvolt peak in neutron scattering, supporting the coupling between charges and spin excitations.",

author = "Kaindl, {R. A.} and M. Woerner and T. Elsaesser and Smith, {D. C.} and Ryan, {J. F.} and Farnan, {G. A.} and McCurry, {M. P.} and Walmstey, {D. G.}",

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T1 - Ultrafast mid-infrared response of YBa2Cu3O(7-δ)

AU - Kaindl, R. A.

AU - Woerner, M.

AU - Elsaesser, T.

AU - Smith, D. C.

AU - Ryan, J. F.

AU - Farnan, G. A.

AU - McCurry, M. P.

AU - Walmstey, D. G.

PY - 2000/1/21

Y1 - 2000/1/21

N2 - Optical spectra of high-transition-temperature superconductors in the midinfrared display a gap of in-plane conductivity whose role for superconductivity remains unresolved. Femtosecond measurements of the mid- infrared reflectivity of YBa2Cu3O(7-δ) after nonequilibrium optical excitation are used to demonstrate the ultrafast fill-in of this gap and reveal two gap constituents: a picosecond recovery of the superconducting condensate in underdoped and optimally doped material and, in underdoped YBa2Cu3O(7-δ), an additional subpicosecond component related to pseudogap correlations. The temperature-dependent amplitudes of both contributions correlate with the antiferromagnetic 41-millielectronvolt peak in neutron scattering, supporting the coupling between charges and spin excitations.

AB - Optical spectra of high-transition-temperature superconductors in the midinfrared display a gap of in-plane conductivity whose role for superconductivity remains unresolved. Femtosecond measurements of the mid- infrared reflectivity of YBa2Cu3O(7-δ) after nonequilibrium optical excitation are used to demonstrate the ultrafast fill-in of this gap and reveal two gap constituents: a picosecond recovery of the superconducting condensate in underdoped and optimally doped material and, in underdoped YBa2Cu3O(7-δ), an additional subpicosecond component related to pseudogap correlations. The temperature-dependent amplitudes of both contributions correlate with the antiferromagnetic 41-millielectronvolt peak in neutron scattering, supporting the coupling between charges and spin excitations.

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Ultrafast mid-infrared response of YBa₂Cu₃O(7-δ)

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