To: 2ndDivisionVet
Graphene is a zero-gap semiconductor, because its conduction and valence bands meet at the Dirac points. The Dirac points are six locations in momentum space, on the edge of the Brillouin zone, divided into two non-equivalent sets of three points. The two sets are labeled K and K'. The sets give graphene a valley degeneracy of gv = 2. By contrast, for traditional semiconductors the primary point of interest is generally Γ, where momentum is zero. Four electronic properties separate it from other condensed matter systems.
2 posted on
03/20/2017 9:09:28 PM PDT by
HandyDandy
("I reckon so. I guess we all died a little in that damn war.")
To: HandyDandy
3 posted on
03/20/2017 9:34:21 PM PDT by
tosh
To: HandyDandy
And do you actually understand what you just copied and pasted?
6 posted on
03/20/2017 10:53:38 PM PDT by
Nifster
(I see puppy dogs in the clouds)
To: HandyDandy
I was just going to type this same thing.
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