Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.076801
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) [24241040]
- World Premier International Research Center Initiative (WPI), MEXT
- National Science Council, Taiwan [100-2917-I-564-022]
- Grants-in-Aid for Scientific Research [24540332] Funding Source: KAKEN
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We demonstrate that silicene, a 2D honeycomb lattice consisting of Si atoms, loses its Dirac fermion characteristics due to substrate-induced symmetry breaking when synthesized on the Ag(111) surface. No Landau level sequences appear in the tunneling spectra under a magnetic field, and density functional theory calculations show that the band structure is drastically modified by the hybridization between the Si and Ag atoms. This is the first direct example demonstrating the lack of Dirac fermions in a single layer honeycomb lattice due to significant symmetry breaking. DOI: 10.1103/PhysRevLett.110.076801
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