Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strain-induced enhancement of the Seebeck effect in magnetic tunneling
  junctions via interface resonant tunneling: Ab-initio study   We investigate the thermoelectric properties of Fe/MgO/Fe(001) magnetic
tunnel junctions (MTJs) by means of the linear-response theory combined with a
first-principles-based Landauer-B\"uttiker approach. We find that the Seebeck
coefficient of Fe/MgO/Fe(001) MTJs strongly depends on the barrier thickness
and the tetragonal distortion. A compressive tetragonal distortion of the
in-plane lattice parameter in the MTJs provides interface resonant states just
above the Fermi energy. This causes resonant tunneling in the MTJs and
significantly enhances the Seebeck coefficient when the thickness of the MgO
barrier is around 1 nm (four or five atomic layers of MgO). Moreover, an
extensive tetragonal distortion of the in-plane lattice parameter pushes the
interface states away from the Fermi energy, leading to a reduction of the
Seebeck coefficient. Furthermore, we find that the interface resonant tunneling
enhances the power factor of the MTJs for the compressive distortion. These
results indicate that control of the barrier thickness and the tetragonal
distortion will be effective for maximizing the thermoelectric properties of
MTJs.

23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph