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Anomalous Quasiparticle Lifetime in Geometric Quantum Critical Metals by Song, Hao; Ma, Han; Kallin, Catherine; Lee, Sung-Sik is a scholarly article available to read on EtoBox.

What is Anomalous Quasiparticle Lifetime in Geometric Quantum Critical Metals about?

Metals can undergo geometric quantum phase transitions where the local curvature of the Fermi surface changes sign without a change in symmetry or topology. At the inflection points on the Fermi surface, the local curvature vanishes, leading to an anomalous dynamics of quasiparticles. In this paper, we study geometric quantum critical metals that support inflection points in two dimensions, and show that the decay rate of quasiparticles goes as $E^{\alpha}$ with $1<\alpha<2$ as a function of quasiparticle energy $E$ at the inflection points.

Author

Song, Hao; Ma, Han; Kallin, Catherine; Lee, Sung-Sik

Published

2023

Language

EN