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Oct 29, 2022

Electrons with Planckian scattering in strange metals follow standard rules of orbital motion in a magnet

Posted by in categories: materials, quantum physics

Strange metals, or non-Fermi liquids, are distinct states of matter that have been observed in different quantum materials, including cuprate superconductors. These states are characterized by unusual conductive properties, such as a resistivity that is linearly associated with temperature (T-linear).

In the strange phase of matter, electrons undergo what is known as “Planckian dissipation,” a high scattering rate that linearly increases as the . This T-linear, strong electron scattering is anomalous for metals, which typically present a quadratic (T2), as predicted by the standard theory of metals.

Researchers at Université de Sherbrooke in Canada, Laboratoire National des Champs Magnétiques Intenses in France, and other institutes worldwide have recently carried out a study exploring the possibility that the resistivity of is not only associated with temperature, but also with an applied . This magnetic field linearity had been previously observed in some cuprates and pnictides, with some physicists suggesting that it could also be linked to Planckian dissipation.

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