Two-Dimensional Superconducting Fluctuations Associated with Charge-Density-Wave Stripes in La1.87Sr0.13Cu0.99Fe0.01 O4

H. Huang, S. J. Lee, Y. Ikeda, T. Taniguchi, M. Takahama, C. C. Kao, M. Fujita, J. S. Lee

研究成果: Article査読

抄録

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.

本文言語English
論文番号167001
ジャーナルPhysical review letters
126
16
DOI
出版ステータスPublished - 2021 4 21

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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