<div class="csl-bib-body">
<div class="csl-entry">Kitatani, M., Schäfer, T., Aoki, H., & Held, K. (2019). Why the critical temperature of high-T-c cuprate superconductors is so low: The importance of the dynamical vertex structure. <i>Physical Review B</i>, <i>99</i>(4), Article 041115(R). https://doi.org/10.1103/physrevb.99.041115</div>
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dc.identifier.issn
2469-9950
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/144104
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dc.description.abstract
To fathom the mechanism of high-temperature (Tc) uperconductivity, the dynamical vertex approximation is evoked for the two-dimensional repulsive Hubbard model. After showing that our results reproduce well the cuprate phase diagram with a reasonable Tc and dome structure, we keep track of the scattering processes that primarily affect Tc. We find that local particle-particle diagrams significantly screen the bare interaction at low frequencies, which in turn suppresses antiferromagnetic spin fluctuations and hence the pairing interaction. Thus we identify dynamical vertex corrections as one of the main oppressors of Tc, which may provide a hint toward higher Tc's.
en
dc.language.iso
en
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dc.relation.ispartof
Physical Review B
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dc.subject
Methods in superconductivity
en
dc.subject
Dynamical mean field theory
en
dc.subject
Green's function methods
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dc.subject
Hubbard model
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dc.title
Why the critical temperature of high-T-c cuprate superconductors is so low: The importance of the dynamical vertex structure