M40.00001. Room-Temperature Superconductivity in High-Pressure Hydrides: An electronic structure perspective

Presented by: Lilia Boeri, Sapienza Universita' di Roma, Italy


Abstract

Conventional Superconductivity near Room Temperature was observed for the first time almost fifty years after its theoretical prediction, when a superconducting critical temperature (Tc) of 203 K was reported in sulfur hydride, SH3.[1] Tc’s exceeding 200 K have later been reported also in lanthanum and yttrium hydrides.[2] In this talk, I will show how electronic structure methods can be used to understand the material-specific aspects that underlie high-Tc superconductivity in different classes of hydrides,[3] and identify strategies to reduce the pressure for high-Tc conventional superconductivity.[4] [1] A. P. Drozdov et al, Nature 525, 73 (2015); M. Somayazulu et al, Phys. Rev. Lett. 122, 027001 (2019); A.P. Drozdov et al, Nature 569, 528 (2019); I.A. Troyan et al., cond-mat/1908.01534; P.P. Kong et al., cond-mat/1909.10482. [2] J. A. Flores-Livas, L. Boeri, A. Sanna, G. Profeta, R. Arita, M. Eremets, cond-mat/1905.06693; C. Heil, S. di Cataldo, G.B. Bachelet, L. Boeri, Phys. Rev. B 99, 220502 (2019); C. Heil, G. B. Bachelet, and L.Boeri, Phys. Rev. B 97, 214510 (2018); C. Kokail, W. von der Linden, and L. Boeri, Phys. Rev. Mat. 1, 074803 (2017); C. Heil and L. Boeri, Phys. Rev. B 92, 060508(R) (2015). *I acknowledge funding from the FWF Grant P-30269-N36 Superhydra and Progetto Ateneo Sapienza 2017 and 2018.

Authors

  • Lilia Boeri


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