Normal state specific heat in the cuprates La$_{2-x}$Sr$_x$CuO$_4$ and Bi$_{2+y}$Sr$_{2-x-y}$La$_x$CuO$_{6+δ}$ near the critical point of the pseudogap phase

no code implementations • 22 Jan 2021 • C. Girod, D. LeBoeuf, A. Demuer, G. Seyfarth, S. Imajo, K. Kindo, Y. Kohama, M. Lizaire, A. Legros, A. Gourgout, H. Takagi, T. Kurosawa, M. Oda, N. Momono, J. Chang, S. Ono, G. -q. Zheng, C. Marcenat, L. Taillefer, T. Klein

In La$_{2-x}$Sr$_x$CuO$_4$ at $x=p = 0. 22$, $0. 24$ and $0. 25$, $C_e / T = 15-16~{\rm mJmol}^{-1}{\rm K}^{-2}$ at $T = 2~{\rm K}$, values that are twice as large as those measured at higher doping ($p > 0. 3$) and lower doping ($p < 0. 15$).

Superconductivity Strongly Correlated Electrons

Calculation of an enhanced A1g symmetry mode induced by Higgs oscillations in the Raman spectrum of high-temperature cuprate superconductors

no code implementations • 3 Dec 2020 • M. Puviani, A. Baum, S. Ono, Y. Ando, R. Hackl, D. Manske

In superconductors the Anderson-Higgs mechanism allows for the existence of a collective amplitude (Higgs) mode which can couple to eV-light mainly in a non-linear Raman-like process.

Superconductivity