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Doping dependence o...
Doping dependence of the electron-phonon coupling in two families of bilayer superconducting cuprates
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- Peng, Y. Y. (author)
- Beijing University of Technology
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- Martinelli, Leonardo (author)
- Politecnico di Milano,Polytechnic University of Milan
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- Li, Qizhi (author)
- Beijing University of Technology
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- Rossi, Matteo (author)
- Politecnico di Milano,Polytechnic University of Milan
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- Mitrano, Matteo (author)
- University of Illinois
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- Arpaia, Riccardo, 1985 (author)
- Politecnico di Milano,Polytechnic University of Milan,Chalmers tekniska högskola,Chalmers University of Technology
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- Sala, Marco Moretti (author)
- Politecnico di Milano,Polytechnic University of Milan
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- Gao, Qiang (author)
- Chinese Academy of Sciences
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- Guo, Xuefei (author)
- University of Illinois
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- De Luca, Gabriella M. (author)
- Universita Degli Studi Di Napoli Federico Ii,University of Naples Federico II
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- Walters, Andrew C. (author)
- Diamond Light Source
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- Nag, Abhishek (author)
- Diamond Light Source
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- Barbour, Andi (author)
- Brookhaven National Laboratory
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- Gu, Genda (author)
- Brookhaven National Laboratory
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- Pelliciari, Jonathan (author)
- Brookhaven National Laboratory
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- Brookes, Nicholas B. (author)
- European Synchrotron Radiation Facility (ESRF)
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- Abbamonte, Peter (author)
- University of Illinois
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Salluzzo, Marco (author)
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- Zhou, Xingjiang (author)
- Chinese Academy of Sciences
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- Zhou, Ke Jin (author)
- Diamond Light Source
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- Bisogni, Valentina (author)
- Brookhaven National Laboratory
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- Braicovich, Lucio (author)
- Politecnico di Milano,Polytechnic University of Milan,European Synchrotron Radiation Facility (ESRF)
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- Johnston, Steven (author)
- University of Tennessee
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- Ghiringhelli, Giacomo (author)
- Politecnico di Milano,Polytechnic University of Milan
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(creator_code:org_t)
- 2022
- 2022
- English.
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In: Physical Review B. - 2469-9969 .- 2469-9950. ; 105:11
- Related links:
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Abstract
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- While electron-phonon coupling (EPC) is crucial for Cooper pairing in conventional superconductors, its role in high-Tc superconducting cuprates is debated. Using resonant inelastic x-ray scattering at the oxygen K edge, we study the EPC in Bi2Sr2CaCu2O8+δ (Bi2212) and Nd1+xBa2-xCu3O7-δ (NBCO) at different doping levels ranging from heavily underdoped (p=0.07) to overdoped (p=0.21). We analyze the data with a localized Lang-Firsov model that allows for the coherent excitations of two phonon modes. While electronic band dispersion effects are non-negligible, we are able to perform a study of the relative values of EPC matrix elements in these cuprate families. In the case of NBCO, the choice of the excitation energy allows us to disentangle modes related to the CuO chains and the CuO2 planes. Combining the results from the two families, we find the EPC strength decreases with doping at q∥=(-0.25,0) r.l.u., but has a nonmonotonic trend as a function of doping at smaller momenta. This behavior is attributed to the screening effect of charge carriers. We also find that the phonon intensity is enhanced in the vicinity of the charge-density-wave excitations while the extracted EPC strength appears to be less sensitive to their proximity. By performing a comparative study of two cuprate families, we are able to identify general trends in the EPC for the cuprates and provide experimental input to theories invoking a synergistic role for this interaction in d-wave pairing.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Peng, Y. Y.
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Martinelli, Leon ...
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Li, Qizhi
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Rossi, Matteo
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Mitrano, Matteo
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Arpaia, Riccardo ...
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show more...
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Sala, Marco More ...
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Gao, Qiang
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Guo, Xuefei
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De Luca, Gabriel ...
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Walters, Andrew ...
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Nag, Abhishek
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Barbour, Andi
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Gu, Genda
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Pelliciari, Jona ...
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Brookes, Nichola ...
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Abbamonte, Peter
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Salluzzo, Marco
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Zhou, Xingjiang
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Zhou, Ke Jin
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Bisogni, Valenti ...
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Braicovich, Luci ...
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Johnston, Steven
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Ghiringhelli, Gi ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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Physical Review ...
- By the university
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Chalmers University of Technology