What is pseudo spin in graphene ?

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Hasan M. Abdullah

check this

https://www.researchgate.net/post/What_is_pseudospin

S Kalaiselvan

Graphene’s spin equivalent pseudospin arises from the degeneracy introduced by the honeycomb lattice’s two inequivalent atomic sites per unit cell. Previously it has been thought that the usual electron spin and the pseudospin indexing the graphene sublattice state are merely analogues