Current-Induced Step Bending Instability on Vicinal Surfaces
نویسندگان
چکیده
منابع مشابه
Current-Induced Step Bending Instability on Vicinal Surfaces
Motivated by recent experiments on current induced step bunching on Si(111) surfaces, we study a generalized 2D Barton-Cabrera-Franck model, where adatoms have a diffusion bias parallel to the step edges and there is an attachment barrier at the step edge. We find a new linear instability with novel step patterns. Monte Carlo simulations on a solid-on-solid model are used to study the instabili...
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Step patterns on vicinal (2× 1) reconstructed surfaces of noble metals Au(110) and Pt(110), miscut towards the (100) orientation, are investigated. The free energy of the reconstructed surface with a network of crossing opposite steps is calculated in the strong chirality regime when the steps cannot make overhangs. It is explained why the steps are not perpendicular to the direction of the mis...
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Fluctuations of a single step on a vicinal surface are investigated using a discrete model designed to go further in capturing atomistic effects than usually achieved with continuum models. Variants of the model to incorporate the following three types of adatom dynamics are studied: attachment-detachment; periphery (step-edge) diffusion; and terrace diffusion. The dynamic exponent z is determi...
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The structural and energetic properties of [loo] and [llO] steps on the (001) surface of fee metal have been determined by T = 0 atomistic simulations. The interactions between [NO] steps and between [llO] steps on the (001) surface are determined from the surface energy of a series of (Oln) and (ilm) surfaces, respectively. For step spacings larger than three fee lattice parameters (R > 3a,), ...
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Pak-Wing Fok,1 Rodolfo R. Rosales,2 and Dionisios Margetis3 1Applied and Computational Mathematics, California Institute of Technology, Pasadena, California 91125, USA 2Department of Mathematics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 3Department of Mathematics and Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 2...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1998
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.81.2743