A model for the reconstructions of the W(100) surface is presented. Four types of distortions are obtained, along 〈011〉, 〈001〉, 〈100〉 (commensurate), and (× 10) (incommensurate). The 〈011〉 distortion, corresponding to the observed (√2×√2)45° clean surface, is worked out in detail. A distortion magnitude of ∼ 0.35 Å is found, and a surface coherence length ξ≃15° Å close to experiment. The full vibrational spectrum, the distortion penetration, and the anisotropic surface anharmonic energies are also obtained.

Instability, Distortion and Dynamics of the W(100) Surface / A., Fasolino; Santoro, Giorgio; E., Tosatti. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 44:(1980), pp. 1684-1687. [10.1103/PhysRevLett.44.1684]

Instability, Distortion and Dynamics of the W(100) Surface

SANTORO, Giorgio;
1980

Abstract

A model for the reconstructions of the W(100) surface is presented. Four types of distortions are obtained, along 〈011〉, 〈001〉, 〈100〉 (commensurate), and (× 10) (incommensurate). The 〈011〉 distortion, corresponding to the observed (√2×√2)45° clean surface, is worked out in detail. A distortion magnitude of ∼ 0.35 Å is found, and a surface coherence length ξ≃15° Å close to experiment. The full vibrational spectrum, the distortion penetration, and the anisotropic surface anharmonic energies are also obtained.
1980
44
1684
1687
Instability, Distortion and Dynamics of the W(100) Surface / A., Fasolino; Santoro, Giorgio; E., Tosatti. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 44:(1980), pp. 1684-1687. [10.1103/PhysRevLett.44.1684]
A., Fasolino; Santoro, Giorgio; E., Tosatti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/458896
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