Ultrafast dynamics in optimally doped YBa2Cu3O7-δ observed with white light pump-probe spectroscopy

Y. T. Wang; Y. H. Lee; Y. J. Chen; W. T. Tang; Chih-Wei Luo; Atsushi Yabushita; Kaung-Hsiung Wu; Jiunn-Yuan Lin; Jenh-Yih Juang; T. M. Uen; T. Kobayashi

doi:10.1007/s10948-010-0984-5

Ultrafast dynamics in optimally doped YBa₂Cu₃O_7-δ observed with white light pump-probe spectroscopy

Y. T. Wang^*, Y. H. Lee, Y. J. Chen, W. T. Tang, Chih-Wei Luo, Atsushi Yabushita, Kaung-Hsiung Wu, Jiunn-Yuan Lin, Jenh-Yih Juang, T. M. Uen, T. Kobayashi

^*Corresponding author for this work

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

Abstract

The quasiparticle relaxation dynamics in optimally doped (001) YBa ₂Cu ₃O _7-δ thin films were measured at various temperatures by white light pump-probe technique. The 2D ultrafast spectroscopy with broadband (∼200 nm) and high time-resolution (∼9 fs) was performed by the non-collinear optical parametric amplifier (NOPA). The relaxation time and the amplitude of the transient transmissivity changes (ΔT/T) are wavelength-dependent. The maximum ΔT/T appears at around 625 nm (∼1.98 eV) which corresponds to the transition between the Fermi level and the UHB (upper Hubbard band). Furthermore, the oscillations with ∼150, ∼320, ∼500 cm ^-1 have been clearly observed in the Fourier transformed graph of the 2D ultrafast spectroscopy, which are consistent with the phonon modes in Raman-scattering spectra.

Original language	English
Pages (from-to)	519-521
Number of pages	3
Journal	Journal of Superconductivity and Novel Magnetism
Volume	24
Issue number	1-2
DOIs	https://doi.org/10.1007/s10948-010-0984-5
State	Published - Jan 2011

Keywords

2D ultrafast spectroscopy
Cuprate superconductors
YBa2Cu3O7-δ

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title = "Ultrafast dynamics in optimally doped YBa2Cu3O7-δ observed with white light pump-probe spectroscopy",

abstract = "The quasiparticle relaxation dynamics in optimally doped (001) YBa 2Cu 3O 7-δ thin films were measured at various temperatures by white light pump-probe technique. The 2D ultrafast spectroscopy with broadband (∼200 nm) and high time-resolution (∼9 fs) was performed by the non-collinear optical parametric amplifier (NOPA). The relaxation time and the amplitude of the transient transmissivity changes (ΔT/T) are wavelength-dependent. The maximum ΔT/T appears at around 625 nm (∼1.98 eV) which corresponds to the transition between the Fermi level and the UHB (upper Hubbard band). Furthermore, the oscillations with ∼150, ∼320, ∼500 cm -1 have been clearly observed in the Fourier transformed graph of the 2D ultrafast spectroscopy, which are consistent with the phonon modes in Raman-scattering spectra.",

keywords = "2D ultrafast spectroscopy, Cuprate superconductors, YBa2Cu3O7-δ",

author = "Wang, {Y. T.} and Lee, {Y. H.} and Chen, {Y. J.} and Tang, {W. T.} and Chih-Wei Luo and Atsushi Yabushita and Kaung-Hsiung Wu and Jiunn-Yuan Lin and Jenh-Yih Juang and Uen, {T. M.} and T. Kobayashi",

year = "2011",

month = jan,

doi = "10.1007/s10948-010-0984-5",

language = "English",

volume = "24",

pages = "519--521",

journal = "Journal of Superconductivity and Novel Magnetism",

issn = "1557-1939",

publisher = "Springer New York",

number = "1-2",

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T1 - Ultrafast dynamics in optimally doped YBa2Cu3O7-δ observed with white light pump-probe spectroscopy

AU - Wang, Y. T.

AU - Lee, Y. H.

AU - Chen, Y. J.

AU - Tang, W. T.

AU - Luo, Chih-Wei

AU - Yabushita, Atsushi

AU - Wu, Kaung-Hsiung

AU - Lin, Jiunn-Yuan

AU - Juang, Jenh-Yih

AU - Uen, T. M.

AU - Kobayashi, T.

PY - 2011/1

Y1 - 2011/1

N2 - The quasiparticle relaxation dynamics in optimally doped (001) YBa 2Cu 3O 7-δ thin films were measured at various temperatures by white light pump-probe technique. The 2D ultrafast spectroscopy with broadband (∼200 nm) and high time-resolution (∼9 fs) was performed by the non-collinear optical parametric amplifier (NOPA). The relaxation time and the amplitude of the transient transmissivity changes (ΔT/T) are wavelength-dependent. The maximum ΔT/T appears at around 625 nm (∼1.98 eV) which corresponds to the transition between the Fermi level and the UHB (upper Hubbard band). Furthermore, the oscillations with ∼150, ∼320, ∼500 cm -1 have been clearly observed in the Fourier transformed graph of the 2D ultrafast spectroscopy, which are consistent with the phonon modes in Raman-scattering spectra.

AB - The quasiparticle relaxation dynamics in optimally doped (001) YBa 2Cu 3O 7-δ thin films were measured at various temperatures by white light pump-probe technique. The 2D ultrafast spectroscopy with broadband (∼200 nm) and high time-resolution (∼9 fs) was performed by the non-collinear optical parametric amplifier (NOPA). The relaxation time and the amplitude of the transient transmissivity changes (ΔT/T) are wavelength-dependent. The maximum ΔT/T appears at around 625 nm (∼1.98 eV) which corresponds to the transition between the Fermi level and the UHB (upper Hubbard band). Furthermore, the oscillations with ∼150, ∼320, ∼500 cm -1 have been clearly observed in the Fourier transformed graph of the 2D ultrafast spectroscopy, which are consistent with the phonon modes in Raman-scattering spectra.

KW - 2D ultrafast spectroscopy

KW - Cuprate superconductors

KW - YBa2Cu3O7-δ

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U2 - 10.1007/s10948-010-0984-5

DO - 10.1007/s10948-010-0984-5

M3 - Article

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SN - 1557-1939

VL - 24

SP - 519

EP - 521

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 1-2

ER -

Ultrafast dynamics in optimally doped YBa₂Cu₃O_7-δ observed with white light pump-probe spectroscopy

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Keywords

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