Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of electronic structure in pristine and hole-doped kagome
  metal RbV$_3$Sb$_5$   We report on in situ low-temperature (4 K) scanning tunneling microscope
measurements of atomic and electronic structures of the cleaved surfaces of an
alkali-based kagome metal RbV$_3$Sb$_5$ single crystals. We find that the
dominant pristine surface exhibits Rb-1x1 structure, in which a unique
unidirectional $\sqrt{3}a_0$ charge order is discovered. As the sample
temperature slightly rises, Rb-$\sqrt{3}$x1 and Rb-$\sqrt{3}$x$\sqrt{3}$
reconstructions form due to desorption of surface Rb atoms. Our conductance
mapping results demonstrate that Rb desorption not only gives rise to hole
doping, but also renormalizes the electronic band structures. Surprisingly, we
find a ubiquitous gap opening near the Fermi level in tunneling spectra on all
the surfaces despite their large differences of hole-carrier concentration,
indicating an orbital-selective band reconstruction in RbV$_3$Sb$_5$.

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The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga