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24 April 2024

» arxiv » cond-mat/0606347

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Study of HgBa$_2$CuO$_{4+delta}$ by Angle-Resolved Photoemission Spectroscopy
W.S. Lee ; T. Yoshida ; W. Meevasana ; K.M. Shen ; D.H. Lu ; W.L. Yang ; X.J. Zhou ; X. Zhao ; G. Yu ; Y. Cho ; M. Greven ; Z. Hussain ; Z.-X. Shen ;
Date:	14 Jun 2006
Subject:	Superconductivity
Abstract:	We present the first angle-resolved photoemission measurement on the single-layer Hg-based cuprate, HgBa$_2$CuO$_{4+delta}$ (Hg1201). A quasi-particle peak in the spectrum and a kink in the band dispersion around the diagonal of the Brillouin zone are observed, whereas no structure is detected near the Brillouin zone boundary. To search for a material-dependent trend among hole-doped cuprates, including Hg1201, we use a tight-binding model to fit their Fermi surfaces. We find a positive correlation between the $T_{c,mathrm{max}}$ and $t’/t$, consistent with theoretical predictions.
Source:	arXiv, cond-mat/0606347
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