Zigzag graphene nanoribbons without inversion symmetry

Details Zigzag graphene nanoribbons without inversion symmetry Zigzag graphene nanoribbons without inversion symmetry

2011-07-19

arxiv.org/abs/1107.3982v1

PhysRevB.84.115434(2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 7 figures

Scientific paper

10.1103/PhysRevB.84.115434

Graphene on a substrate will suffer an inversion-symmetry-breaking (ISB) lattice potential. Taking electron-electron interaction into account, we study in this paper the possibility of half-metallicity and noncollinear (NC) magnetic phase for graphene zigzag nanoribbons without inversion symmetry. At half-filling it is found that half-metallic(HM) state can be achieved at an intermediate value of the ISB potential due to its competition with the electron-electron interaction. Away from half-filling, the phase diagrams of doping versus ISB potential for different ribbon width are given, where the regimes for the HM states and NC magnetic state are clearly indicated and discussed. For ribbons with perfect edges, we predict a topological transition between two HM states with different magnetic structures, which is accompanied by an abrupt transition of electrical conductance along the ribbon from $2e^2/h$ to $e^2/h$.

Affiliated with

Also associated with

No associations

Rating

Zigzag graphene nanoribbons without inversion symmetry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Zigzag graphene nanoribbons without inversion symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zigzag graphene nanoribbons without inversion symmetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-515534