Electronic and geometric structure of graphene/SiC(0001) decoupled by lithium intercalation

Physical Review B - Condensed Matter and Materials Physics

Volumn 91, Issue 24, 2015, Pages

  Bisti, F ^a   Profeta, G ^a,b   Vita, H ^c   Donarelli, M ^a   Perrozzi, F ^a   Sheverdyaeva, P M ^d   Moras, P ^d   Horn, K ^c   Ottaviano, L ^a,b  

^a UNIVERSITY OF L'AQUILA   (Italy)

^b CNR SPIN l'Aquila ^*  (Italy)

^c FRITZ HABER INSTITUT DER MAX PLANCK GESELLSCHAFT   (Germany)

^d CNR   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84931275423     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.91.245411     Document Type: Article

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25. A second (Equation presented)-band parallel to the main one is also barely visible. Having a lower binding energy, we interpreted it as coming from small initial graphene coverage present before the Li deposition. As reported in Ref. [20], samples prepared to induce the (Equation presented) reconstruction are usually characterized by the coexistence of seed graphene patches on top of the buffer layer. In our case, a graphene-related component in the C (Equation presented) spectrum could not be unequivocally disentangled, therefore, by comparing our C (Equation presented) spectra with those reported in Ref. [20], such initial graphene coverage has to be lower than 0.3 ML. Because the ARPES intensity of these features is one order of magnitude lower than that of the main feature, we can roughly estimate the initial graphene coverage be 0.1 ML.
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