I was just reading up some articles on graphene, where the authors have used the word pi-plasmons in graphene leading to extraordinary absorption in the UV range.
I am confused as to what is meant by pi-plasmon?
It is well known that a plasmons (collective electronic excitations) band in UV-VIS spectra appears from a nanoparticle or thin films of silver and gold. The metal bond in metals is carried out by common electrons over the entire metal volume. In graphene, boronitride, only the pi-electrons in one plane are common. Plasmons in metals and graphene or in a multilayers differ. Therefore they are called pi-plasmons.
Plasmons in 2D-based multilayers can be understood as charge oscillations confined to certain planes and coupled via interlayer coulomb interactions.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Thin Films and Nanotechnology