by Seibold, Goetz, Arpaia, Riccardo, Peng, Ying Ying, Fumagalli, Roberto, Braicovich, Lucio, Di Castro, Carlo, Grilli, Marco and Ghiringhelli, Giacomo Claudio and Caprara, Sergio
Abstract:
Besides the mechanism responsible for high critical temperature superconductivity, the grand unresolved issue of the cuprates is the occurrence of a strange metallic state above the so-called pseudogap temperature T-*. Even though such state has been successfully described within a phenomenological scheme, the so-called Marginal Fermi-Liquid theory, a microscopic explanation is still missing. However, recent resonant X-ray scattering experiments identified a new class of charge density fluctuations characterized by low characteristic energies and short correlation lengths, which are related to the well-known charge density waves. These fluctuations are present over a wide region of the temperature-vs-doping phase diagram and extend well above T-*. Here we investigate the consequences of charge density fluctuations on the electron and transport properties and find that they can explain the strange metal phenomenology. Therefore, charge density fluctuations are likely the long-sought microscopic mechanism underlying the peculiarities of the metallic state of cuprates. The strange metallic state of cuprates occurring in a broad region of their phase diagram outside the superconducting and pseudogapped regions remains a mystery. Here the authors consider the charge density fluctuations recently discovered in resonant X-ray experiments as a possible source of scattering and show that these fluctuations can account for the strange metallic behavior.
Reference:
Strange metal behaviour from charge density fluctuations in cuprates (Seibold, Goetz, Arpaia, Riccardo, Peng, Ying Ying, Fumagalli, Roberto, Braicovich, Lucio, Di Castro, Carlo, Grilli, Marco and Ghiringhelli, Giacomo Claudio and Caprara, Sergio), In COMMUNICATIONS PHYSICS, volume 4, 2021.
Bibtex Entry:
@article{ WOS:000607114400007,
Author = {Seibold, Goetz and Arpaia, Riccardo and Peng, Ying Ying and Fumagalli,
   Roberto and Braicovich, Lucio and Di Castro, Carlo and Grilli, Marco and
   Ghiringhelli, Giacomo Claudio and Caprara, Sergio},
Title = {{Strange metal behaviour from charge density fluctuations in cuprates}},
Journal = {{COMMUNICATIONS PHYSICS}},
Year = {{2021}},
Volume = {{4}},
Number = {{1}},
Month = {{JAN 4}},
Abstract = {{Besides the mechanism responsible for high critical temperature
   superconductivity, the grand unresolved issue of the cuprates is the
   occurrence of a strange metallic state above the so-called pseudogap
   temperature T-{*}. Even though such state has been successfully
   described within a phenomenological scheme, the so-called Marginal
   Fermi-Liquid theory, a microscopic explanation is still missing.
   However, recent resonant X-ray scattering experiments identified a new
   class of charge density fluctuations characterized by low characteristic
   energies and short correlation lengths, which are related to the
   well-known charge density waves. These fluctuations are present over a
   wide region of the temperature-vs-doping phase diagram and extend well
   above T-{*}. Here we investigate the consequences of charge density
   fluctuations on the electron and transport properties and find that they
   can explain the strange metal phenomenology. Therefore, charge density
   fluctuations are likely the long-sought microscopic mechanism underlying
   the peculiarities of the metallic state of cuprates. The strange
   metallic state of cuprates occurring in a broad region of their phase
   diagram outside the superconducting and pseudogapped regions remains a
   mystery. Here the authors consider the charge density fluctuations
   recently discovered in resonant X-ray experiments as a possible source
   of scattering and show that these fluctuations can account for the
   strange metallic behavior.}},
DOI = {{10.1038/s42005-020-00505-z}},
Article-Number = {{7}},
ISSN = {{2399-3650}},
ResearcherID-Numbers = {{Arpaia, Riccardo/Y-1247-2019
   Caprara, Sergio/M-7683-2013
   Grilli, Marco/C-6309-2009
   peng, yingying/K-1805-2015
   Ghiringhelli, Giacomo/D-1159-2014}},
ORCID-Numbers = {{Arpaia, Riccardo/0000-0003-4687-2376
   Caprara, Sergio/0000-0001-8041-3232
   Grilli, Marco/0000-0001-5607-7996
   peng, yingying/0000-0002-2657-3590
   Ghiringhelli, Giacomo/0000-0003-0867-7748}},
Unique-ID = {{WOS:000607114400007}},
}

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