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Mascaraque Susunaga, Arantzazu and Avila, J. and Michel, E. G. and Asensio, M. C. (1998) Fermi surface and electronic structure of Pb/Ge(111). Physical review B, 57 (23). pp. 14758-14765. ISSN 0163-1829
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Official URL: http://dx.doi.org/10.1103/PhysRevB.57.14758
Abstract
The electronic structure of Pb/Ge(111) has been probed along the temperature-induced phase transition ct -root 3X root 3R30 degrees double right arrow 3 X 3 using angle-resolved photoemission. The alpha-root 3X root 3R30 degrees phase is metallic due to the existence of a half-filled, dispersing surface band. The 3 X 3 phase is characterized by the appearance of an additional surface band with 3 X 3 periodicity, whose role in the phase transition is discussed. The Fermi-surface topology of the alpha-root 3X root 3R30 degrees phase has been probed using angle-resolved photoemission. Its shape is undulated, and it resembles strongly the theoretical prediction, with a Fermi momentum of 0.31 Angstrom(-1) along <(Gamma K)over bar> directions and 0.40 Angstrom(-1) along <(Gamma M)over bar> directions. These values were determined from different experimental methods, and agree with the values needed for a perfect 3 X 3 nesting. However, the Fermi surface exhibits no large flat areas suitable for electronic nesting.
Item Type: | Article |
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Additional Information: | © 1998 The American Physical Society. |
Uncontrolled Keywords: | Charge-Density wave; Angle-Resolved photoemission; Ge(111) Surfaces; Pb; Phase; W(001); Reconstructions; Spectroscopy; Interfaces; Systems |
Subjects: | Sciences > Physics > Materials |
ID Code: | 28620 |
Deposited On: | 24 Feb 2015 09:45 |
Last Modified: | 18 Mar 2015 09:55 |
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