Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological spin Hall and spin Nernst effects in a bilayer graphene   We consider intrinsic contributions to the spin Hall and spin Nernst effects
in a bilayer graphene. The relevant electronic spectrum is obtained from the
tight binding Hamiltonian, which also includes the intrinsic spin-orbit
interaction. The corresponding spin Hall and spin Nernst conductivities are
compared with those obtained from effective Hamiltonians appropriate for states
in the vicinity of the Fermi level of a neutral bilayer graphene. Both
conductivities are determined within the linear response theory and Green
function formalism. The influence of an external voltage between the two atomic
sheets is also included. We found transition from the topological spin Hall
insulator phase at low voltages to conventional insulator phase at larger
voltages.

23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
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