Bi ultra-thin crystalline films on InAs(1 1 1)A and B substrates : A combined core-level and valence-band angle-resolved and dichroic photoemission study

The growth of Bi on both the In-terminated (A) face and the As-terminated (B) face of InAs(1 1 1) has been investigated by low-energy electron diffraction, scanning tunnelling microscopy, and photoelectron spectroscopy using synchrotron radiation. The changes upon Bi deposition of the In 4d and Bi 5d5/2 photoelectron signals allow to get a comprehensive picture of the Bi/InAs(1 1 1) interface. From the early stage the Bi growth on the A face is epitaxial, contrary to that on the B face that proceeds via the formation of islands. Angle-resolved photoelectron spectra show that the electronic structure of a Bi deposit of ≈10 bi-layers on the A face is identical to that of bulk Bi, while more than ≈30 bi-layers are needed for the B face. Both bulk and surface electronic states observed are well accounted for by fully relativistic ab initio calculations performed using the one-step model of photoemission. These calculations are used to analyse the dichroic photoemission data recorded in the vicinity of the Fermi level around the Γ&bar; point of the Brillouin zone.

Mariot, J. M.Synchrotron SOLEIL,Paris-Sorbonne University (författare)
Djukic, U.Université de Cergy-Pontoise (författare)
Wang, W.Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)we2813wa (författare)
Heckmann, O.Université de Cergy-Pontoise,University of Paris-Saclay (författare)
Richter, M. C.Université de Cergy-Pontoise,University of Paris-Saclay (författare)
Kanski, J.Chalmers University of Technology (författare)
Leandersson, M.Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)maxl-mle (författare)
Balasubramanian, T.Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)maxl-bth (författare)
Sadowski, J.Linnaeus University,University of Warsaw,Institute of Physics of the Polish Academy of Sciences(Swepub:lu)maxl-jsa (författare)
Braun, J.Ludwig-Maximilian University of Munich (författare)
Ebert, H.Ludwig-Maximilian University of Munich (författare)
Vobornik, I.CNR Istituto Officina dei Materiali (IOM) (författare)
Fujii, J.CNR Istituto Officina dei Materiali (IOM) (författare)
Minár, J.University of West Bohemia (författare)
Hricovini, K.University of Paris-Saclay,Université de Cergy-Pontoise (författare)
University of West BohemiaSynchrotron SOLEIL (creator_code:org_t)

Av författaren/redakt...: Nicolaï, L.; Mariot, J. M.; Djukic, U.; Wang, W.; Heckmann, O.; Richter, M. C.; visa fler...; Kanski, J.; Leandersson, M.; Balasubramanian, ...; Sadowski, J.; Braun, J.; Ebert, H.; Vobornik, I.; Fujii, J.; Minár, J.; Hricovini, K.; visa färre...

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