Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A weakly correlated Fermi liquid state with a small Fermi surface in
  lightly doped Sr$_3$Ir$_2$O$_7$   We characterize the electron doping evolution of
(Sr$_{1-x}$La$_x$)$_3$Ir$_2$O$_7$ by means of angle-resolved photoemission.
Concomitant with the metal insulator transition around $x\approx0.05$ we find
the emergence of coherent quasiparticle states forming a closed small Fermi
surface of volume $3x/2$, where $x$ is the independently measured La
concentration. The quasiparticle weight $Z$ remains large along the entire
Fermi surface, consistent with the moderate renormalization of the low-energy
dispersion. This indicates a conventional, weakly correlated Fermi liquid state
with a momentum independent residue $Z\approx0.5$ in lightly doped
Sr$_3$Ir$_2$O$_7&.

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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org