Thursday, November 15, 2012

1211.3145 (Riccardo Messina et al.)

Tuning the local density of states in graphene-covered systems via
strong coupling with graphene plasmons
   [PDF]

Riccardo Messina, Jean-Paul Hugonin, Jean-Jacques Greffet, François Marquier, Yannick De Wilde, Ali Belarouci, Luc Frechette, Yvon Cordier, Philippe Ben-Abdallah
It is known that the near-field spectrum of the local density of states of electromagnetic field above a SiC/air interface displays an intense narrow peak due to the presence of a surface polariton. It has been recently shown that this surface wave can be strongly coupled with the surface plasmon of graphene in graphene-SiC heterosystems. Here, we explore the interplay between these two phenomena and demonstrate that the spectrum of the LDOS in these systems presents two peaks whose position depends dramatically both on the distance to the interface and on the chemical potential of graphene. This paves the way towards the active control of the LDOS.
View original: http://arxiv.org/abs/1211.3145

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