Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Energetics of complex phase diagram in a tunable bilayer graphene probed
  by quantum capacitance   Bilayer graphene provides a unique platform to explore the rich physics in
quantum Hall effect. The unusual combination of spin, valley and orbital
degeneracy leads to interesting symmetry broken states with electric and
magnetic field. Conventional transport measurements like resistance
measurements have been performed to probe the different ordered states in
bilayer graphene. However, not much work has been done to directly map the
energetics of those states in bilayer graphene. Here, we have carried out the
magneto capacitance measurements with electric and magnetic field in a
hexagonal boron nitride encapsulated dual gated bilayer graphene device. At
zero magnetic field, using the quantum capacitance technique we measure the gap
around the charge neutrality point as a function of perpendicular electric
field and the obtained value of the gap matches well with the theory. In
presence of perpendicular magnetic field, we observe Landau level crossing in
our magneto-capacitance measurements with electric field. The gap closing and
reopening of the lowest Landau level with electric and magnetic field shows the
transition from one ordered state to another one. Further more we observe the
collapsing of the Landau levels near the band edge at higher electric field
($\bar D > 0.5$ V/nm), which was predicted theoretically. The complete
energetics of the Landau levels of bilayer graphene with electric and magnetic
field in our experiment paves the way to unravel the nature of ground states of
the system.

6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas