GS IAS Logo

< Previous | Contents | Next >

Silicenevsgraphene

But silicene is potentially even more exciting because it could be more easily compatible with existing silicon-based electronics, which means its benefits could be exploited quicker. Since carbon is right next to silicon on the periodic table, scientists began to wonder if a single layer of silicon atoms might be similarly revolutionary, and so the race to make some was on.

The European research team reported that their silicene behaved just like graphene in a key respect: its electrons behave in a very particular way. They are capable of moving like massless particles, travelling through the lattice at the speed of light, on a range of energy levels that are continuous, rather than discrete. When plotted, this energy continuum is known as a Dirac cone.

Where graphene has no band gap , the sample of silicene (if that is what it is) produced in Japan, does. This makes it immediately more suitable for use in developing nano-scale transistors, for example.