Prof. Ilan Goldfarb,
Tel Aviv University
About us
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We are interested in physics and chemistry of single crystal surfaces, in particular in epitaxial self-assembly of functional nanostructures: their nucleation, growth, properties, and characterization. For example, we are currently focusing on magnetic nanostructures.
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Surface atomistic processes and phenomena such as adsorption, desorption, diffusion, segregation, nucleation and growth, phase transitions, self-assembly and self-organization at surface steps and terraces, play a key role in homo- and hetero-epitaxial crystal growth, heterogeneous catalysis, and other fields important in science and technology.
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We explore the effects of epitaxial strain due to lattice or symmetry mismatch on the growing layer or island crystalline perfection, size, defects, and properties. For example, Ge/Si(001) is a classical example of a Stranski-Krastanov growth, where the initial two-dimensional wetting layer grows pseudomorphically, i.e.strained due to 4.2% Ge/Si lattice mismatch, and then when certain critical layer thickness is exceeded – three dimensional pyramidal or hut-shape nanometric islands nucleate on top of it (Fig. 1 ).
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We are especially interested in mesoscopic and nanoscopic self-ordering of epitaxial islands in geometrically well-defined patterns, using self-templated substrates, e.g., stepped vicinal surfaces, as exemplified by self-ordering of CoSi2 nanoislands (ordered CoSi2 islands in the bottom figure.
Research
Contact Us
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Prof. Ilan Goldfarb
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PP
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Email: ilango@tauex.tau.ac.il
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Room: Wolfson Mechanical Engineering Bldg, ground floor, DMSE corridor, office 125
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Phone +972-3-6407079 (office) +972-3-6405931 (lab)
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Fax:+972-3-6410189.