Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin Hall magnetoresistance in metallic bilayers   Spin Hall magnetoresistance (SMR) is studied in metallic bilayers that
consist of heavy metal (HM) layer and a ferromagnetic metal (FM) layer. We find
nearly a ten-fold increase of SMR in W/CoFeB compared to previously studied
HM/ferromagnetic insulator (FI) systems. The SMR increases with decreasing
temperature despite the negligible change in the W layer resistivity with
temperature. A model is developed to account for the absorption of the
longitudinal spin current to the FM layer, one of the key characteristics of a
metallic ferromagnet. We find that the model not only quantitatively describes
the HM layer thickness dependence of SMR, allowing accurate estimation of the
spin Hall angle and the spin diffusion length of the HM layer, but also can
account for the temperature dependence of SMR by assuming a temperature
dependent spin polarization of the FM layer. These results illustrate the
unique role a metallic ferromagnetic layer plays in defining spin transmission
across the HM/FM interface.

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The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph