Matches in SemOpenAlex for { <https://semopenalex.org/work/W2071734306> ?p ?o ?g. }
- W2071734306 abstract "We have studied the evolutions of surface electronic structure (Fermi surfaces and valence bands) by electron filling into a two-dimensional free-electronlike surface state, during adsorptions of monovalent metal atoms (noble metal; Ag, and alkali metal; Na) on the $mathrm{Si}(111)sqrt{3}ifmmodetimeselsetexttimesfi{}sqrt{3}text{ensuremath{-}}mathrm{Ag}$ surface. The Fermi surfaces (Fermi rings) of a small electron pocket grow continuously with the adsorption. Eventually, when the $sqrt{21}ifmmodetimeselsetexttimesfi{}sqrt{21}$ superstructure was formed by 0.1--0.2 monolayer adsorption of Ag or Na, the Fermi ring is found to be larger than the $sqrt{21}ifmmodetimeselsetexttimesfi{}sqrt{21}$-surface Brillouin zone (SBZ), and to be folded by obeying the $sqrt{21}ifmmodetimeselsetexttimesfi{}sqrt{21}$ periodicity. As a result, the Fermi surface is composed of a large hole pocket at the $overline{ensuremath{Gamma}}$ point and small electron pockets at the $overline{K}$ point in each reduced $sqrt{21}ifmmodetimeselsetexttimesfi{}sqrt{21}$ SBZ, meaning that the behavior of surface-state carriers becomes hole-like. Despite a sharp chemical distinction between the adsorbates, a very similar surface electronic structure is found for both the Ag-induced and Na-induced $sqrt{21}ifmmodetimeselsetexttimesfi{}sqrt{21}$ phases. Based on the Boltzmann equation, surface-state conductivites of these surfaces are obtained from the measured Fermi surfaces, reproducing successfully the results of previous surface transport measurements." @default.
- W2071734306 created "2016-06-24" @default.
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- W2071734306 date "2005-06-16" @default.
- W2071734306 modified "2023-09-30" @default.
- W2071734306 title "Evolution of Fermi surface by electron filling into a free-electronlike surface state" @default.
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- W2071734306 doi "https://doi.org/10.1103/physrevb.71.235315" @default.
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