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arXiv · 1612.04870

Comment on "Magnetotransport signatures of a single nodal electron pocket constructed from Fermi arcs"

Sudip Chakravarty·Zhiqiang Wang
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Abstract

We comment on the recent work [N. Harrison, \textit{et al.} Phys. Rev. B {\bf 92}, 224505 (2015)] which attempts to explain the sign reversal and quantum oscillations of the Hall coefficient observed in cuprates from a single nodal diamond-shaped electron pocket with concave arc segments. Given the importance of this work, it calls for a closer scrutiny. Their conclusion of sign reversal of the Hall coefficient depends on a non-generic rounding of the sharp vertices. Moreover, their demonstration of quantum oscillation in the Hall coefficient from a single pocket is unconvincing. We maintain that at least two pockets with different scattering rates is necessary to explain the observed quantum oscillations of the Hall coefficient.

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Sudip Chakravarty, Zhiqiang Wang. 2016-12-14. Comment on "Magnetotransport signatures of a single nodal electron pocket constructed from Fermi arcs". https://doi.org/10.1103/physrevb.96.146501

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