Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 41: Unconventional Superconductors

TT 41.9: Vortrag

Mittwoch, 18. März 2020, 17:30–17:45, HSZ 201

A hydrodynamical description for magneto-transport in the strange metal phase of cupratesAndrea Amoretti1,2, •Martina Meinero1,3, Daniel Brettan2, Federico Caglieris4, Enrico Giannini5, Christian Hess4, Bernd Buechner4, Nicodemo Magnoli1,2, and Marina Putti1,31DIFI-Università di Genova, via Dodecaneso 33, 14146 Genova, Italy — 2INFN-Sezione di Genova, via Dodecaneso 33, 16146 Genova, Italy — 3CNR-SPIN, corso Perrone 24, 16152 Genova, Italy — 4Leibniz IFW Dresden, Helmholtz str. 20, 10169 Dresen, Germany — 5University of Geneva, 24 Quai Ernst Ansermet, 1211 Geneva, Switzerland

High temperature superconductors are strongly coupled systems which present a complicated phase diagram with many coexisting phases. This makes it difficult to understand the mechanism which generates their singular transport properties. Hydrodynamics, which mostly relies on the symmetries of the system without referring to any specific microscopic mechanism, constitutes a promising framework to analyze these materials. In this paper we show that in the strange metal phase of the cuprates, a whole set of transport coefficients are described by a universal hydrodynamic framework once one accounts for the effects of quantum critical charge density waves. We corroborate our theoretical prediction by measuring the DC transport properties of Bi-2201 close to optimal doping, proving the validity of our approach. Our argument can be used as a consistency check to understand the universality class governing the behavior of high temperature cuprate superconductors.

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