Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tuning the electronic structure of Sr2IrO4 thin films by bulk electronic
  doping using molecular beam epitaxy   By means of oxide molecular beam epitaxy with shutter-growth mode, we have
fabricated a series of electron-doped (Sr1-xLax)2IrO4(001)(x = 0, 0.05, 0.1 and
0.15) single crystalline thin films and then investigated the doping dependence
of electronic structure utilizing in-situ angle-resolved photoemission
spectroscopy. We find that with increasing doping proportion, the Fermi levels
of samples progressively shift upward. Prominently, an extra electron pocket
crossing the Fermi level around the M point has been evidently observed in 15 %
nominal doping sample. Moreover, bulk-sensitive transport measurements confirm
that doping effectively suppresses the insulating state with respect to the
as-grown Sr2IrO4, though doped samples still remain insulating at low
temperatures due to the localization effect possibly stemming from disorders
including oxygen deficiencies. Our work provides another feasible doping method
to tune electronic structure of Sr2IrO4.

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The categories of this paper are: math
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
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The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
9
The categories of this paper are: nlin