Dirac valley
= Dirac valley
A region of momentum space surrounding a <Dirac cone>. The two inequivalent <Dirac valleys in graphene> provide a familiar example; a valley labels a region and is not the electron spin.
= Dirac valley
A region of momentum space surrounding a <Dirac cone>. The two inequivalent <Dirac valleys in graphene> provide a familiar example; a valley labels a region and is not the electron spin.