Vertical temperature boundary of the pseudogap under the superconducting dome in the phase diagram of $Bi_2$$Sr_2$$CaCu_2$$O_{8+\delta}$

B. Loret; S. Sakai; S. Benhabib; Y. Gallais; M. Cazayous; M Méasson; R Zhong; J. Schneeloch; G Gu; A. Forget; D. Colson; I. Paul; M. Civelli; A. Sacuto

Vertical temperature boundary of the pseudogap under the superconducting dome in the phase diagram of $Bi_2$$Sr_2$$CaCu_2$$O_{8+\delta}$

B. Loret ^{1, 2} S. Sakai ^{3, 4} S. Benhabib ¹ Y. Gallais ⁵ M. Cazayous ¹ M Méasson ¹ R Zhong ⁶ J. Schneeloch ⁶ G Gu ⁶ A. Forget ² D. Colson ² I. Paul ¹ M. Civelli ⁷ A. Sacuto ⁵

1 MPQ - Laboratoire Matériaux et Phénomènes Quantiques

2 LNO - Laboratoire Nano-Magnétisme et Oxydes

SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay

3 Department of Environmental Science

4 CSRS - RIKEN Center for Sustainable Resource Science

5 LSLP - Laboratoire de Spectroscopie en Lumière Polarisée

6 Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory

7 LPS - Laboratoire de Physique des Solides

Abstract : Combining electronic Raman scattering experiments with cellular dynamical mean field theory, we present evidence of the pseudogap in the superconducting state of various hole-doped cuprates. In $Bi_2$$Sr_2$$CaCu_2$$O_{8+\delta}$ we track the superconducting pseudogap hallmark, a peak-dip feature, as a function of temperature $T$ and doping $p$, well beyond the optimal one. We show that, at all temperatures under the superconducting dome, the pseudogap disappears at the doping $p_c$, between 0.222 and 0.226, where also the normal-state pseudogap collapses at a Lifshitz transition. This demonstrates that the superconducting pseudogap boundary forms a vertical line in the $T-p$ phase diagram.

Keywords : 7462Dh 7425nd numbers: 7472Gh 7472Kf

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Journal articles

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Physics [physics]

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Vertical temperature boundary of the pseudogap under the superconducting dome in the phase diagram of $Bi_2$$Sr_2$$CaCu_2$$O_{8+\delta}$

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Vertical temperature boundary of the pseudogap under the superconducting dome in the phase diagram of $Bi_2$$Sr_2$$CaCu_2$$O_{8+\delta}$

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