Electron localization in narrow rough-bounded wires: evidence of different surface scattering mechanisms
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.
2001
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| _version_ | 1876436786940477440 |
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| author | N. M. Makarov |
| author_facet | N. M. Makarov |
| contents | Electron localization in narrow rough-bounded wires: evidence of different surface scattering mechanisms N. M. Makarov Yu. V. Tarasov Física, Astronomía y Matemáticas Electron transport Mesoscopic systems Surface scattering The conductance of ultra-quantum (single-mode) rough-bounded wires is calculated in frames of Hamilton approach. It is shown that in wires of finite length the electron transport exhibits both ballistic and localized regimes. We discriminate two fundamentally different competing mechanisms of electron scattering by edge roughness of conductor, viz. by-height (BH) and by-slope (BS) scattering. BH scattering leads to conventional dependence of the electron localization length locL on r.m.s. height of boundary defects, 2locL, while BS scattering gives 4locL. The latter mechanism is more likely to dominate even for the case of small in height and mildly sloping roughness. Through this mechanism, gen-erically localized quantum states of electrons (so called evanescent modes) manifest themselves significantly, in contrast to the case of electron scattering from bulk static inhomogeneities. 2001 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94201329 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.13 |
| format | Artículo científico |
| id | redalyc_94201329 |
| institution | Redalyc |
| language | en |
| publishDate | 2001 |
| publisher | Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. |
| spellingShingle | Electron localization in narrow rough-bounded wires: evidence of different surface scattering mechanisms N. M. Makarov Física, Astronomía y Matemáticas Electron transport Mesoscopic systems Surface scattering Electron localization in narrow rough-bounded wires: evidence of different surface scattering mechanisms N. M. Makarov Yu. V. Tarasov Física, Astronomía y Matemáticas Electron transport Mesoscopic systems Surface scattering The conductance of ultra-quantum (single-mode) rough-bounded wires is calculated in frames of Hamilton approach. It is shown that in wires of finite length the electron transport exhibits both ballistic and localized regimes. We discriminate two fundamentally different competing mechanisms of electron scattering by edge roughness of conductor, viz. by-height (BH) and by-slope (BS) scattering. BH scattering leads to conventional dependence of the electron localization length locL on r.m.s. height of boundary defects, 2locL, while BS scattering gives 4locL. The latter mechanism is more likely to dominate even for the case of small in height and mildly sloping roughness. Through this mechanism, gen-erically localized quantum states of electrons (so called evanescent modes) manifest themselves significantly, in contrast to the case of electron scattering from bulk static inhomogeneities. 2001 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94201329 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.13 |
| title | Electron localization in narrow rough-bounded wires: evidence of different surface scattering mechanisms |
| topic | Física, Astronomía y Matemáticas Electron transport Mesoscopic systems Surface scattering |
| url | https://www.redalyc.org/articulo.oa?id=94201329 |