Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-dependent Seebeck effect and spin caloritronics in magnetic
  graphene   We investigate the spin-dependent thermoelectric effects in magnetic graphene
in both diffusive and ballistic regimes. Employing the Boltzmann and Landauer
formalisms we calculate the spin and charge Seebeck coefficients (thermopower)
in magnetic graphene varying the spin splitting, temperature, and doping of the
junction. It is found that while in normal graphene the temperature gradient
drive a charge current, in the case of magnetic graphene a significant spin
current is also established. In particular we show that in the undoped magnetic
graphene in which different spin carriers belong to conduction and valence
bands, a pure spin current is driven by the temperature gradient. In addition
it is revealed that profound thermoelectric effects can be achieved at
intermediate easily accessible temperatures when the thermal energy is
comparable with Fermi energy $k_BT\lesssim \mu$. By further investigation of
the spin-dependent Seebeck effect and a significantly large figure of merit for
spin thermopower $\mathcal{Z}_{\rm sp}T$, we suggest magnetic graphene as a
promising material for spin-caloritronics studies and applications.

13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an