Accepted articles

Physics of our days


Planckian relaxation delusion in metals


Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, ul. Amundsena 106, Ekaterinburg, 620016, Russian Federation

We present a critical review of recent attempts to introduce the new quantum ("Planckian") limit for the temperature dependence of inelastic scattering rate of electrons in metals. We briefly discuss the main experimental facts and some simple theoretical models explaining the linear in temperature growth of resistivity (starting from very low temperatures) in superconducting cuprates and some similar systems. There is no commonly accepted theoretical explanation of such behavior up to now. We also discuss the known quantum limits for electrical conductivity (resistance). It is shown that the universal Planckian limit for the inelastic relaxation rate proposed in some papers is a kind of delusion related to a certain procedure to represent the experimental data.

Keywords: resistivity of metals, relaxation time, effective mass, quantum fluctuations, high-temperature superconductors
PACS: 72.10.Di, 71.15.Cz, 72.15.Lh (all)
DOI: 10.3367/UFNe.2020.08.038821
Citation: Sadovskii M V "Planckian relaxation delusion in metals" Phys. Usp., accepted

Received: 5th, August 2020, 19th, August 2020

Оригинал: Садовский М В «Иллюзия планковской релаксации в металлах» УФН, принята к публикации; DOI: 10.3367/UFNr.2020.08.038821

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