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seen Dec 18 at 18:10

Dec
18
awarded  Yearling
Dec
18
comment How can pseudospin be a vector? (Graphene)
Thank you this makes sense
Dec
18
accepted How can pseudospin be a vector? (Graphene)
Nov
11
awarded  Teacher
Nov
3
awarded  Curious
Nov
2
comment How can pseudospin be a vector? (Graphene)
The blue arrows are real spin and the red arrows are pseudospin. To be honest I'm not sure! The question stands without the image though. I stole it from this paper if you have access: nature.com/nphys/journal/v7/n1/pdf/nphys1869.pdf
Nov
2
revised How can pseudospin be a vector? (Graphene)
edited body
Nov
2
comment How can pseudospin be a vector? (Graphene)
Thanks for the comment, the image appears fine for me and on a friends computer who's not logged in. I'll try again in any case. Sorry though, for a visual reference just google 'pseudospin graphene'.
Nov
2
asked How can pseudospin be a vector? (Graphene)
Oct
23
comment Graphene has a honeycomb lattice - true or false?
Ok. Well than wh
Oct
22
comment Graphene has a honeycomb lattice - true or false?
Funny isn't it. I just feel i am going to be unsatisfied with a response "you cant call that a lattice" until somebody explains "because it doesnt satisfy property X or Y according to the definition of a lattice".
Oct
22
comment Graphene has a honeycomb lattice - true or false?
Could I ask why it is not technically correct? Or maybe I should say, going by the mathematical definition of a lattice (not a Bravais lattice) why can't I say honeycomb lattice?
Oct
22
comment Graphene has a honeycomb lattice - true or false?
Agreed. This is the cause of much (what I'd say are petty) arguments within my group whenever someone delivers a talk on graphene and uses the phrase "honeycomb lattice" in passing. Everyone knows exactly what that person means but people get upset because they assume that by lattice the speaker means 'Bravais lattice'. I understand it may not follow convention, but is it still technically correct to say that graphene has a honeycomb lattice?
Oct
22
asked Graphene has a honeycomb lattice - true or false?
Mar
22
awarded  Notable Question
Mar
12
accepted Bogoliubov transformation with a slight twist
Mar
12
answered Bogoliubov transformation with a slight twist
Mar
11
asked Bogoliubov transformation with a slight twist
Jan
20
awarded  Quorum
Jan
13
accepted Missing terms in Hamiltonian after Legendre transformation of Lagrangian