Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin pumping and large field-like torque at room temperature in
  sputtered amorphous WTe$_{2-x}$ films   We studied the spin-to-charge and charge-to-spin conversion at room
temperature in sputtered WTe2-x (x=0.8)(t)/Co20Fe60B20(6 nm) heterostructures.
Spin pumping measurements were used to characterize the spin-to-charge
efficiency and the spin efficiency was calculated to be larger than ~0.035.
Second harmonic Hall measurements were carried out to estimate the
charge-to-spin conversion ratio. We found that the system exhibits a large
field-like-torque (spin torque efficiency ~ 0.1) and small damping-like-torque
(spin torque efficiency ~0.001) compared to that reported for heavy metals.
High-resolution transmission electron microscopy images show that the WTe2-x
layer is amorphous, which may enhance the spin swapping effect by inducing
large interfacial spin orbit scattering, thus contributing to a large field
like torque.

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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: cs
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th