Band structure and Fermi surface of atomically uniform lead films

Details Band structure and Fermi surface of atomically uniform lead films Band structure and Fermi surface of atomically uniform lead films

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010njph...12k3034h&link_type=abstract

New Journal of Physics, Volume 12, Issue 11, pp. 113034 (2010).

Physics

Scientific paper

Atomically uniform lead films are prepared on Si(111)-(7×7) substrates by the molecular beam epitaxy method, and their electronic structures are investigated by high-resolution angle-resolved photoemission spectroscopy and first-principles density functional theory calculations. We have observed the six-fold symmetric Fermi surfaces of Pb/Si(111)-(7×7) films. Their topology and size are almost the same regardless of the difference of film thicknesses (17, 21, 24 and 25 monolayers). The comparison between the measured and calculated thin-film Fermi surfaces suggests that the as-prepared Pb/Si(111)-(7×7) films are dominated by the hexagonal-close-packed stacking films instead of the face-centered-cubic ones. The theoretical calculations also indicate that spin-orbit coupling plays an important role in the band structures and Fermi surface topologies of Pb films.

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