Two-Dimensional Superconducting Fluctuations Associated with Charge-Density-Wave Stripes in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>La</mml:mi></mml:mrow><mml:mrow><mml:mn>1.87</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>0.13</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Cu</mml:mi></mml:mrow><mml:mrow><mml:…
نویسندگان
چکیده
The presence of a small concentration in-plane Fe dopants in La$_{1.87}$Sr$_{0.13}$Cu$_{0.99}$Fe$_{0.01}$O$_4$ is known to enhance stripe-like spin and charge density wave (SDW CDW) order, suppress the superconducting $T_c$. Here, we show that it also induces highly two-dimensional (2D) correlations have been argued be signatures new form so-called pair-density-wave (PDW) order. In addition, using resonant soft x-ray scattering, find 2D fluctuation strongly associated with CDW stripe. particular, PDW signature first appears when correlation length stripe grows over eight times lattice unit ($\sim$ 8$a$). These results provide critical conditions for formation
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2021
ISSN: ['1079-7114', '0031-9007', '1092-0145']
DOI: https://doi.org/10.1103/physrevlett.126.167001