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| Ars Technica - link below |
A new experiment involving a graphene-like material has shown that it's possible to perform some spectacular manipulations of the properties of these quasiparticles. The work is described in a Nature letter by Kenjiro Gomes, Warren Mar, Wonhee Ko, Francisco Guinea, and Hari C. Manoharan. The team arranged carbon monoxide molecules to form the same hexagonal pattern found in graphene, except that they could change the spacing slightly.
This produced an environment where the material's electrons behave remarkably like relativistic particles, with a "speed of light" that they can adjust. Additionally, the researchers could change the spacing between molecules in a way that the masses of the quasiparticles changed, or cause them to behave as though they are interacting with electric and magnetic fields—without actually applying those fields to the material. This setup will potentially help us explore new physics that may arise in these environments.
Wikipedia: Higgs mechanism
Ars Technica: Researchers mimic relativity and the Higgs field in graphene-like material
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