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Delocalized surface state in epitaxial Si(111) film with spontaneous √3 × √3 superstructure

Journal Article


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Abstract


  • The " multilayer silicene" films were grown on Ag(111), with increasing thickness above 30 monolayers (ML). Scanning tunneling microscopy (STM) observations suggest that the " multilayer silicene" is indeed a bulk-like Si(111) film with a (√ 3 × √ 3)R30° honeycomb superstructure on surface. The possibility for formation of Si(111)(√ 3 × √ 3)R30°-Ag reconstruction on the surface can be distinctively ruled out by peeling off the surface layer with the STM tip. On this surface, delocalized surface state as well as linear energy-momentum dispersion was observed from quasiparticle interference patterns. Our results indicate that a bulklike silicon film with diamondlike structure can also host delocalized surface state, which is even more attractive for potential applications, such as new generation of nanodevices based on Si.

UOW Authors


  •   Chen, Jian (external author)
  •   Du, Yi
  •   Li, Zhi
  •   Li, Wenbin (external author)
  •   Feng, Baojie (external author)
  •   Qiu, Jinlan (external author)
  •   Cheng, Peng (external author)
  •   Dou, Shi
  •   Chen, Lan (external author)
  •   Wu, Ke-Hui (external author)

Publication Date


  • 2015

Citation


  • Chen, J., Du, Y., Li, Z., Li, W., Feng, B., Qiu, J., Cheng, P., Dou, S. Xue., Chen, L. & Wu, K. (2015). Delocalized surface state in epitaxial Si(111) film with spontaneous √3 × √3 superstructure. Scientific Reports, 5 13590-1-13590-8.

Scopus Eid


  • 2-s2.0-84940481173

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2588&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1586

Has Global Citation Frequency


Start Page


  • 13590-1

End Page


  • 13590-8

Volume


  • 5

Place Of Publication


  • United Kingdom

Abstract


  • The " multilayer silicene" films were grown on Ag(111), with increasing thickness above 30 monolayers (ML). Scanning tunneling microscopy (STM) observations suggest that the " multilayer silicene" is indeed a bulk-like Si(111) film with a (√ 3 × √ 3)R30° honeycomb superstructure on surface. The possibility for formation of Si(111)(√ 3 × √ 3)R30°-Ag reconstruction on the surface can be distinctively ruled out by peeling off the surface layer with the STM tip. On this surface, delocalized surface state as well as linear energy-momentum dispersion was observed from quasiparticle interference patterns. Our results indicate that a bulklike silicon film with diamondlike structure can also host delocalized surface state, which is even more attractive for potential applications, such as new generation of nanodevices based on Si.

UOW Authors


  •   Chen, Jian (external author)
  •   Du, Yi
  •   Li, Zhi
  •   Li, Wenbin (external author)
  •   Feng, Baojie (external author)
  •   Qiu, Jinlan (external author)
  •   Cheng, Peng (external author)
  •   Dou, Shi
  •   Chen, Lan (external author)
  •   Wu, Ke-Hui (external author)

Publication Date


  • 2015

Citation


  • Chen, J., Du, Y., Li, Z., Li, W., Feng, B., Qiu, J., Cheng, P., Dou, S. Xue., Chen, L. & Wu, K. (2015). Delocalized surface state in epitaxial Si(111) film with spontaneous √3 × √3 superstructure. Scientific Reports, 5 13590-1-13590-8.

Scopus Eid


  • 2-s2.0-84940481173

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2588&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1586

Has Global Citation Frequency


Start Page


  • 13590-1

End Page


  • 13590-8

Volume


  • 5

Place Of Publication


  • United Kingdom