Charge density wave energy scale in superconducting cuprates
ORAL
Abstract
An outstanding challenge in high-Tc cuprates is to understand how charge density wave order is related to the pseudogap and superconducting phases [1]. To address this issue it is important to extract the energy scale ΔCDW associated with the charge modulations, and to compare it with the pseudogap (PG) ΔPG and the superconducting gap ΔSC. However, while TCDW is well-characterized from earlier works [2] little has been known about ΔCDW until now. We will report the extraction of ΔCDW for several cuprates using electronic Raman spectroscopy [3]. We observe that ΔCDW increases in a manner similar to the doping dependence of ΔPG and ΔSC. This reveals that the three phases have a common microscopic origin. In addition, we find that ΔCDW ≈ ΔSC over a substantial doping range, which suggests that CDW and superconducting phases are intimately related, for example intertwined or connected by an emergent symmetry [1, 4-6].
[1] E.Fradkin et al., Rev. Mod. Phys. 87, 457 (2015).
[2] R.Comin etl al., Annu. Rev. Condens. Matter Phys. 7, 369 (2016).
[3] B.Loret et al., arXiv:1808.08198 (2018).
[4] K.B.Efetov et al., Nat. Phys. 194 9, 442 (2013).
[5] S.Sachdev et al., Phys. Rev. Lett. 111, 027202 (2013).
[6] Y.Wang et al., Phys. Rev. Lett. 114, 197001 (2015).
[1] E.Fradkin et al., Rev. Mod. Phys. 87, 457 (2015).
[2] R.Comin etl al., Annu. Rev. Condens. Matter Phys. 7, 369 (2016).
[3] B.Loret et al., arXiv:1808.08198 (2018).
[4] K.B.Efetov et al., Nat. Phys. 194 9, 442 (2013).
[5] S.Sachdev et al., Phys. Rev. Lett. 111, 027202 (2013).
[6] Y.Wang et al., Phys. Rev. Lett. 114, 197001 (2015).
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Presenters
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Bastien Loret
- Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot