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Approaching truly freestanding graphene: the structure of hydrogen-intercalated graphene on 6H-SiC(0001).

Publication ,  Journal Article
Sforzini, J; Nemec, L; Denig, T; Stadtmüller, B; Lee, T-L; Kumpf, C; Soubatch, S; Starke, U; Rinke, P; Blum, V; Bocquet, FC; Tautz, FS
Published in: Physical review letters
March 2015

We measure the adsorption height of hydrogen-intercalated quasifreestanding monolayer graphene on the (0001) face of 6H silicon carbide by the normal incidence x-ray standing wave technique. A density functional calculation for the full (6√3×6√3)-R30° unit cell, based on a van der Waals corrected exchange correlation functional, finds a purely physisorptive adsorption height in excellent agreement with experiments, a very low buckling of the graphene layer, a very homogeneous electron density at the interface, and the lowest known adsorption energy per atom for graphene on any substrate. A structural comparison to other graphenes suggests that hydrogen-intercalated graphene on 6H-SiC(0001) approaches ideal graphene.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

March 2015

Volume

114

Issue

10

Start / End Page

106804

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Sforzini, J., Nemec, L., Denig, T., Stadtmüller, B., Lee, T.-L., Kumpf, C., … Tautz, F. S. (2015). Approaching truly freestanding graphene: the structure of hydrogen-intercalated graphene on 6H-SiC(0001). Physical Review Letters, 114(10), 106804. https://doi.org/10.1103/physrevlett.114.106804
Sforzini, J., L. Nemec, T. Denig, B. Stadtmüller, T. -. L. Lee, C. Kumpf, S. Soubatch, et al. “Approaching truly freestanding graphene: the structure of hydrogen-intercalated graphene on 6H-SiC(0001).Physical Review Letters 114, no. 10 (March 2015): 106804. https://doi.org/10.1103/physrevlett.114.106804.
Sforzini J, Nemec L, Denig T, Stadtmüller B, Lee T-L, Kumpf C, et al. Approaching truly freestanding graphene: the structure of hydrogen-intercalated graphene on 6H-SiC(0001). Physical review letters. 2015 Mar;114(10):106804.
Sforzini, J., et al. “Approaching truly freestanding graphene: the structure of hydrogen-intercalated graphene on 6H-SiC(0001).Physical Review Letters, vol. 114, no. 10, Mar. 2015, p. 106804. Epmc, doi:10.1103/physrevlett.114.106804.
Sforzini J, Nemec L, Denig T, Stadtmüller B, Lee T-L, Kumpf C, Soubatch S, Starke U, Rinke P, Blum V, Bocquet FC, Tautz FS. Approaching truly freestanding graphene: the structure of hydrogen-intercalated graphene on 6H-SiC(0001). Physical review letters. 2015 Mar;114(10):106804.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

March 2015

Volume

114

Issue

10

Start / End Page

106804

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences