Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session UU07: V: Superconductivity II
5:00 AM–7:00 AM,
Wednesday, March 22, 2023
Room: Virtual Room 7
Sponsoring
Unit:
DCMP
Chair: Ulrich Welp, Argonne National Laboratory
Abstract: UU07.00008 : Electronic Excitations Probed by Raman Spectroscoy in BiSr2Ca2Cu2O4+δ Cuprate Superconductors*
6:24 AM–6:36 AM
Presenter:
manel mezidi
(Université Paris Cité)
Authors:
manel mezidi
(Université Paris Cité)
alexandr Alekhin
(Université Paris Cité)
Anne Forget
(CEA Saclay)
Dorothée Colson
(CEA Saclay)
Genda Gu
(Brookhaven National Laboratory)
Sarah Houver
(université Paris Cité)
Maximilien Cazayous
(Université Paris Cité)
Yann Gallais
(Université Paris Cité)
Louis Taillefer
(Universite de Sherbrooke)
Alain Sacuto
(Université Paris Cité)
mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;
mso-hansi-font-family:"Cambria Math";mso-bidi-font-family:Arial;mso-ansi-language:
EN;mso-fareast-language:EN-US;font-style:italic;mso-bidi-font-style:normal'> style='mso-bidi-font-style:normal'>? style='mso-bidi-font-style:normal'>SC style='mso-bidi-font-style:normal'>maxand the superconducting transition temperature Tc are linked in an extended range of doping p by the relation <!--[if gte msEquation 12]> style='font-family:"Cambria Math",serif;mso-ascii-font-family:"Cambria Math";
mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;
mso-hansi-font-family:"Cambria Math";mso-bidi-font-family:Arial;mso-ansi-language:
EN;mso-fareast-language:EN-US;font-style:italic;mso-bidi-font-style:normal'> style='mso-bidi-font-style:normal'>? style='mso-bidi-font-style:normal'>SC style='mso-bidi-font-style:normal'>max Δmaxsc(p) ∝ <!--[if gte msEquation 12]> style='font-family:"Cambria Math",serif;mso-ascii-font-family:"Cambria Math";
mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;
mso-hansi-font-family:"Cambria Math";mso-bidi-font-family:Arial;mso-ansi-language:
EN;mso-fareast-language:EN-US;font-style:italic;mso-bidi-font-style:normal'> style='mso-bidi-font-style:normal'>? style='mso-bidi-font-style:normal'>SSE Δsse(p)Tc (p) where Δsse is the energy of the spin singlet excitations, this relation is similar to the one earlier got from angular resolved photo-emission spectroscopy measurements on under-doped Bi-2212 [4]. This proportionality suggests that the AF fluctuations play a key role in the SC pairing mechanism associated with the SC gap at its maximum value.
[1] Anderson, Science 235, 1196 (1987)
[2] Keimer et al., Nature 518, 179 (2015).
[3] Mezidi et al., arXiv: 2207.10166v1 (2022).
[4] Ding, et al. Phys. Rev. Lett. 87, 227001 (2001).
*Centre National de la Recherche Scientifique (CNRS)Institut Quantique (IQ)
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