Tuning the supercritical effective charge in gapless graphene via Fermi velocity modifying through the mechanical stretching

We present a theoretical study of the stretched graphene containing the Coulomb impurity. The cases of uniaxial armchair/zigzag and biaxial symmetry stretching are considered. For the uniaxial stretching, we found the gap opening with the non-monotonic dependence between the gap value and the strain...

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Veröffentlicht in:	Diamond and related materials 2019-12, Vol.100, p.107566, Article 107566
Hauptverfasser:	Katin, Konstantin P., Krylov, Konstantin S., Maslov, Mikhail M., Mur, Vadim D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Dirac equation Electronic structure Exact solutions Fermi velocity Gap opening Graphene Impurities Mechanical stretching Relativism Relativistic effects Stretching Supercritical effective charge
Online-Zugang:	Volltext
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