The 3d surface core-level shifts of the clean Ge(100)(2×1) surface have been investigated at 300 K by photoemission. A previously unobserved (to our knowledge) shifted component at about +0.19 eV relative to the bulk emission has been clearly identified and associated with dimer down-atom emission. The binding energy difference of 0.72 eV between dimer down-atom and dimer up-atom 3d core levels, consistent with a charge transfer similar to that occurring in the Si(100)-(2×1) surface, supports the so-called ionic model of the Ge(100)-(2×1) buckled-dimer reconstruction
Evidence for three surface components in the 3d core-level photoemission spectra of Ge(100)-(2×1) surface / A., Goldoni; Modesti, Silvio; V., Dhanak; M., Sancrotti; A., Santoni. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - STAMPA. - 54:(1996), pp. 11340-11345. [10.1103/PhysRevB.54.11340]
Evidence for three surface components in the 3d core-level photoemission spectra of Ge(100)-(2×1) surface
MODESTI, SILVIO;
1996-01-01
Abstract
The 3d surface core-level shifts of the clean Ge(100)(2×1) surface have been investigated at 300 K by photoemission. A previously unobserved (to our knowledge) shifted component at about +0.19 eV relative to the bulk emission has been clearly identified and associated with dimer down-atom emission. The binding energy difference of 0.72 eV between dimer down-atom and dimer up-atom 3d core levels, consistent with a charge transfer similar to that occurring in the Si(100)-(2×1) surface, supports the so-called ionic model of the Ge(100)-(2×1) buckled-dimer reconstructionPubblicazioni consigliate
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