Epitaxial Zintl aluminide SrAl4 grown on a LaAlO3 substrate

Lukas Schlipf, Alexander Slepko, Agham B. Posadas, Heidi Seinige, Ajit Dhamdhere, Maxim Tsoi, David Smith, Alexander A. Demkov

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Zintl phases are a class of intermetallic materials that have simultaneously ionic and covalent bonding resulting from charge transfer between two different atomic species. We present a combined first principles and experimental study of Zintl-phase SrAl4, which is grown in thin film form on the perovskite oxide LaAlO3 using molecular beam epitaxy. The structural properties are investigated using reflection-high-energy electron diffraction, x-ray diffraction, and cross-section transmission electron microscopy, which reveal relaxed epitaxial island growth. Photoelectron spectroscopy measurements verify the Zintl-Klemm nature of the bonding in the material and are utilized to determine the band offset and the work function of SrAl4, while transport measurements confirm its metallic behavior. The experimentally observed properties are confirmed using density functional calculations.

Original languageEnglish (US)
Article number045314
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number4
DOIs
StatePublished - Jul 17 2013

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Reflection high energy electron diffraction
Substrates
Photoelectron spectroscopy
Epitaxial growth
Molecular beam epitaxy
Perovskite
high energy electrons
Oxides
Intermetallics
Density functional theory
intermetallics
Charge transfer
Structural properties
x ray diffraction
molecular beam epitaxy
electron diffraction
Diffraction
charge transfer
photoelectron spectroscopy
Transmission electron microscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Schlipf, L., Slepko, A., Posadas, A. B., Seinige, H., Dhamdhere, A., Tsoi, M., ... Demkov, A. A. (2013). Epitaxial Zintl aluminide SrAl4 grown on a LaAlO3 substrate. Physical Review B - Condensed Matter and Materials Physics, 88(4), [045314]. https://doi.org/10.1103/PhysRevB.88.045314

Epitaxial Zintl aluminide SrAl4 grown on a LaAlO3 substrate. / Schlipf, Lukas; Slepko, Alexander; Posadas, Agham B.; Seinige, Heidi; Dhamdhere, Ajit; Tsoi, Maxim; Smith, David; Demkov, Alexander A.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 88, No. 4, 045314, 17.07.2013.

Research output: Contribution to journalArticle

Schlipf, L, Slepko, A, Posadas, AB, Seinige, H, Dhamdhere, A, Tsoi, M, Smith, D & Demkov, AA 2013, 'Epitaxial Zintl aluminide SrAl4 grown on a LaAlO3 substrate', Physical Review B - Condensed Matter and Materials Physics, vol. 88, no. 4, 045314. https://doi.org/10.1103/PhysRevB.88.045314
Schlipf, Lukas ; Slepko, Alexander ; Posadas, Agham B. ; Seinige, Heidi ; Dhamdhere, Ajit ; Tsoi, Maxim ; Smith, David ; Demkov, Alexander A. / Epitaxial Zintl aluminide SrAl4 grown on a LaAlO3 substrate. In: Physical Review B - Condensed Matter and Materials Physics. 2013 ; Vol. 88, No. 4.
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