Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hall and Seebeck coefficients from bi-directional charge density wave
  state in high-$T_c$ cuprates   The recent discovery of an incipient charge density wave (CDW) instability
competing with superconductivity in a class of high temperature cuprate
superconductors has brought the role of charge order in the cuprate phase
diagram under renewed focus. Here we take a mean field (Q = 2pi/3,2pi/3)
bi-axial CDW state and calculate the Fermi surface topology and the resulting
Hall and Seebeck coefficients as a function of temperature and hole doping. We
show that, in the appropriate doping ranges where the low temperature state (in
the absence of superconductivity) is a bi-directional CDW, the Fermi surface
consists of electron pockets, resulting in the Hall and Seebeck coefficients
becoming negative at low temperatures as seen in experiments.

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The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: physics
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio