Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 79, Issue 9, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.79.094708
Keywords
impurity scattering; strong and short-range scatterer; lattice vacancy; virtual bound state; resonance scattering; two-dimensional graphite; Dirac point
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- Grants-in-Aid for Scientific Research [19054004] Funding Source: KAKEN
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Electron scattering by defects consisting of several strong and short-range impurities at A and B sublattice points lying close to each other is studied within a k.p scheme in monolayer graphene. In a defect consisting of a single impurity, a quasi-bound state like donor or acceptor state emerges near the Dirac point when the potential becomes extremely strong. In the case of AB pair impurities, the quasi-bound state splits into two and the resonance appears near the Dirac point for small scattering potential. In the case of defects consisting of many atoms, the number of resonances is given by that of AB pairs.
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