Electronic reconstructions in hybrid C/BN heterostructures
CIC nanoGUNE Seminars
- Speaker
-
Miguel Pruneda, CIN2, Barcelona, Spain
- When
-
2012/03/29
13:00 - Place
- nanoGUNE seminar room, Tolosa Hiribidea 76, Donostia - San Sebastian
- Add to calendar
- iCal
The realization of hybrid C/BN monoatomic sheets [1] with potential half-
metallic properties [2], opens the possibility to achieve multifunctional
properties in a graphene-like structure, where electro-magneto-mechanical
properties can be tuned externally by application of an external perturbation
(electric or magnetic fields, mechanical strains, etc). First principles
calculations are used to show how the dielectric properties of BN ribbons and
the spin-dependent interface states at zigzag-edged graphene give rise to
unconventional physical effects similar to those observed at insulating oxide
interfaces [3]. The effects of point defects, external electric fields, and
strains on the electronic structure will also be discussed.
[1] Ci et. al. Nat. Materials 2010, 9, 430.
[2] J.M. Pruneda, Phys. Rev. B 2010, 81, 161409(R)
[3] Ohtomo & Hwang Nature 2004, 427, 423; Brinkman et. al. Nat.Mater. 2007,
6, 493; Reyren et. al. Science 2007, 317, 5842.