Substrate Effect on Terahertz Emission in Fe/Pt Spintronic Emitters

• The choice of the substrate plays an important role for spintronic terahertz (THz) emitters (STEs). We have grown epitaxial Pt/Fe bilayer thin films on MgO and MgAl2O4 substrates. The THz electric field amplitude is found to be larger when Pt/Feis is grown on MgO even though the crystal quality of the Fe film is better when grown on MgAl2O4. This study indicates that the Fecrystal quality affects the THz emission in Pt/Fe STEs and points to the importance of a careful choice of the substrate to enhance the THz amplitude in STEs.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

Crystals

Iron

Epitaxial growth

Electric fields

Substrate

Spintronics

Engineering Science with specialization in Solid State Physics

Teknisk fysik med inriktning mot fasta tillståndets fysik

Publikations- och innehållstyp

vet (ämneskategori)

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