Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: THz emission from Fe/Pt spintronic emitters with L1$_{0}$-FePt alloyed
  interface   Recent developments in nanomagnetism and spintronics have enabled the use of
ultrafast spin physics for terahertz (THz) emission. Spintronic THz emitters,
consisting of ferromagnetic FM / non-magnetic (NM) thin film heterostructures,
have demonstrated impressive properties for the use in THz spectroscopy and
have great potential in scientific and industrial applications. In this work,
we focus on the impact of the FM/NM interface on the THz emission by
investigating Fe/Pt bilayers with engineered interfaces. In particular, we
intentionally modify the Fe/Pt interface by inserting an ordered L1$_{0}$-FePt
alloy interlayer. Subsequently, we establish that a Fe/L1$_{0}$-FePt (2\,nm)/Pt
configuration is significantly superior to a Fe/Pt bilayer structure, regarding
THz emission amplitude. The latter depends on the extent of alloying on either
side of the interface. The unique trilayer structure opens new perspectives in
terms of material choices for the next generation of spintronic THz emitters.

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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph