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  Ultrafast Raman thermometry in driven YBa2Cu3O6.48

Chou, T.-H., Först, M., Fechner, M., Henstridge, M., Roy, S., Buzzi, M., et al. (2023). Ultrafast Raman thermometry in driven YBa2Cu3O6.48.

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2310.00128.pdf (Preprint), 840KB
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2310.00128.pdf
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2023
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https://arxiv.org/abs/2310.00128 (Preprint)
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 Creators:
Chou, T.-H.1, Author           
Först, M.1, Author           
Fechner, M.1, Author           
Henstridge, M.1, Author           
Roy, S.1, Author           
Buzzi, M.1, Author           
Nicoletti, D.1, Author           
Liu, Y.2, Author
Nakata, S.2, Author
Keimer, B.2, Author
Cavalleri, A.1, 3, Author           
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2Max Planck Institute for Solid State Research, ou_persistent22              
3Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              

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Free keywords: Condensed Matter, Superconductivity, cond-mat.supr-con, Condensed Matter, Strongly Correlated Electrons, cond-mat.str-el
 Abstract: Signatures of photo-induced superconductivity have been reported in cuprate materials subjected to a coherent phonon drive. A 'cold' superfluid was extracted from the transient Terahertz conductivity and was seen to coexist with 'hot' uncondensed quasi-particles, a hallmark of a driven-dissipative system of which the interplay between coherent and incoherent responses are not well understood. Here, time resolved spontaneous Raman scattering was used to probe the lattice temperature in the photo-induced superconducting state of YBa2Cu3O6.48. An increase in lattice temperature of approximately 80 K was observed by measuring the time dependent Raman scattering intensity of an undriven 'spectator' phonon mode. This is to be compared with an estimated increase in quasi-particle temperatures of nearly 200 K. These temperature changes provide quantitative information on the nature of the driven state and its decay, and may provide a strategy to optimize this effect.

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Language(s): eng - English
 Dates: 2023-09-29
 Publication Status: Published online
 Pages: 14
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 2310.00128
 Degree: -

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