STM study of the preparation of clean Ta(110) and the subsequent growth of two-dimensional Fe islands

Eelbo Thomas; Wiesendanger Roland

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EELBO, Thomas, , , WIESENDANGER, Roland. STM study of the preparation of clean Ta(110) and the subsequent growth of two-dimensional Fe islands. In: Surface Science, 2016, nr. 653, pp. 113-117. ISSN 0039-6028. DOI: https://doi.org/10.1016/j.susc.2016.06.004

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Surface Science

Numărul 653 / 2016 / ISSN 0039-6028

STM study of the preparation of clean Ta(110) and the subsequent growth of two-dimensional Fe islands

DOI:https://doi.org/10.1016/j.susc.2016.06.004

Pag. 113-117

Eelbo Thomas¹, ¹²³, Wiesendanger Roland¹

¹ University of Hamburg,
² University of Augsburg,
³ Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu" of the Academy of Sciences of Moldova

Disponibil în IBN: 10 noiembrie 2017

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This report deals with the preparation of a clean Ta(110) surface, investigated by means of scanning tunneling microscopy/spectroscopy as well as by low-energy electron diffraction and Auger electron spectroscopy. The surface initially exhibits a surface reconstruction induced by oxygen contamination. This reconstruction can be removed by annealing at high temperatures under ultrahigh vacuum conditions. The reconstruction-free surface reveals a surface resonance at a bias voltage of about −500 mV. The stages of the transformation are presented and discussed. In a next step, Fe islands were grown on top of Ta(110) and investigated subsequently. An intermixing regime was identified for annealing temperatures of (550–590) K.

Cuvinte-cheie
Growth study, Iron islands, Scanning tunneling spectroscopy, Surface segregation, Tantalum,

Scanning tunneling microscopy

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<dc:creator>Eelbo, T.</dc:creator>
<dc:creator>Здравков, .</dc:creator>
<dc:creator>Wiesendanger, R.</dc:creator>
<dc:date>2016-11-01</dc:date>
<dc:description xml:lang='en'><p>This report deals with the preparation of a clean Ta(110) surface, investigated by means of scanning tunneling microscopy/spectroscopy as well as by low-energy electron diffraction and Auger electron spectroscopy. The surface initially exhibits a surface reconstruction induced by oxygen contamination. This reconstruction can be removed by annealing at high temperatures under ultrahigh vacuum conditions. The reconstruction-free surface reveals a surface resonance at a bias voltage of about &minus;500&nbsp;mV. The stages of the transformation are presented and discussed. In a next step, Fe islands were grown on top of Ta(110) and investigated subsequently. An intermixing regime was identified for annealing temperatures of (550&ndash;590)&nbsp;K.</p></dc:description>
<dc:identifier>10.1016/j.susc.2016.06.004</dc:identifier>
<dc:source>Surface Science  (653) 113-117</dc:source>
<dc:subject>Growth study</dc:subject>
<dc:subject>Iron islands</dc:subject>
<dc:subject>Scanning tunneling microscopy</dc:subject>
<dc:subject>Scanning tunneling spectroscopy</dc:subject>
<dc:subject>Surface segregation</dc:subject>
<dc:subject>Tantalum</dc:subject>
<dc:title>STM study of the preparation of clean Ta(110) and the subsequent growth of two-dimensional Fe islands</dc:title>
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