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Condensed Matter > Superconductivity

arXiv:2106.05551 (cond-mat)
[Submitted on 10 Jun 2021]

Title:Suppression of Antiferromagnetism in Electron-Doped Cuprate $T'$-${\rm La}_{2-x}{\rm Ce}_x\rm {CuO}_{4\pmδ}$

Authors:C. Y. Tang, Z. F. Lin, J. X. Zhang, X. C. Guo, J. Y. Guan, S. Y. Gao, Z. C. Rao, J. Zhao, Y. B. Huang, T. Qian, Z. Y. Weng, K. Jin, Y. J. Sun, H. Ding
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Abstract:We performed systematic angle-resolved photoemission spectroscopy measurements $in$-$situ$ on $T'$-${\rm La}_{2-x}{\rm Ce}_x\rm {CuO}_{4\pm\delta}$ (LCCO) thin films over the extended doping range prepared by the refined ozone/vacuum annealing method. Electron doping level ($n$), estimated from the measured Fermi surface volume, varies from 0.05 to 0.23, which covers the whole superconducting dome. We observed an absence of the insulating behavior around $n \sim$ 0.05 and the Fermi surface reconstruction shifted to $n \sim$ 0.11 in LCCO compared to that of other electron-doped cuprates at around 0.15, suggesting that antiferromagnetism is strongly suppressed in this material. The possible explanation may lie in the enhanced -$t'$ /$t$ in LCCO for the largest $\rm{La^{3+}}$ ionic radius among all the Lanthanide elements.
Subjects: Superconductivity (cond-mat.supr-con); Strongly Correlated Electrons (cond-mat.str-el)
Cite as: arXiv:2106.05551 [cond-mat.supr-con]
  (or arXiv:2106.05551v1 [cond-mat.supr-con] for this version)
  https://doi.org/10.48550/arXiv.2106.05551
Related DOI: https://doi.org/10.1103/PhysRevB.104.155125

Submission history

From: Cenyao Tang [view email]
[v1] Thu, 10 Jun 2021 07:26:38 UTC (2,436 KB)
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