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

Eelbo Thomas; Zdravkov Vladimir; Wiesendanger Roland

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2018-10-10 18:03

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EELBO, Thomas, ZDRAVKOV, Vladimir, 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, Zdravkov Vladimir¹²³, 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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