TY - JOUR
T1 - Two-Dimensional Superconducting Fluctuations Associated with Charge-Density-Wave Stripes in La1.87Sr0.13Cu0.99Fe0.01 O4
AU - Huang, H.
AU - Lee, S. J.
AU - Ikeda, Y.
AU - Taniguchi, T.
AU - Takahama, M.
AU - Kao, C. C.
AU - Fujita, M.
AU - Lee, J. S.
N1 - Funding Information:
We thank Steven A. Kivelson, Hoyoung Jang, and Jiajia Wen for valuable discussions and comments. Resonant soft x-ray experiments were carried out at the SSRL (beamline 13-3), SLAC National Accelerator Laboratory. This study at SSRL/SLAC is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515. The transport (resistivity) measurements were performed at IMR/Tohoku University funded by a Grant-in-Aid for Scientific Research (A) (Grant No. 16H02125) and Scientific Research (C) (Grant No. 16K05460).
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/4/21
Y1 - 2021/4/21
N2 - The presence of a small concentration of in-plane Fe dopants in La1.87Sr0.13Cu0.99Fe0.01O4 is known to enhance stripelike spin and charge density wave (SDW and CDW) order and suppress the superconducting Tc. Here, we show that it also induces highly two-dimensional superconducting correlations that have been argued to be the signatures of a new form of superconducting order, the so-called pair density wave (PDW) order. In addition, using resonant soft x-ray scattering, we find that the two-dimensional superconducting fluctuation is strongly associated with the CDW stripe. In particular, the PDW signature first appears when the correlation length of the CDW stripe grows over eight times the lattice unit (∼8a). These results provide critical conditions for the formation of the PDW order.
AB - The presence of a small concentration of in-plane Fe dopants in La1.87Sr0.13Cu0.99Fe0.01O4 is known to enhance stripelike spin and charge density wave (SDW and CDW) order and suppress the superconducting Tc. Here, we show that it also induces highly two-dimensional superconducting correlations that have been argued to be the signatures of a new form of superconducting order, the so-called pair density wave (PDW) order. In addition, using resonant soft x-ray scattering, we find that the two-dimensional superconducting fluctuation is strongly associated with the CDW stripe. In particular, the PDW signature first appears when the correlation length of the CDW stripe grows over eight times the lattice unit (∼8a). These results provide critical conditions for the formation of the PDW order.
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U2 - 10.1103/PhysRevLett.126.167001
DO - 10.1103/PhysRevLett.126.167001
M3 - Article
C2 - 33961453
AN - SCOPUS:85105025816
VL - 126
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 16
M1 - 167001
ER -