9. 5. 2014. Seminar: Edib Dobardžić


Friday, 9 Maj 2014 at 2PM
IPB Library
Seminar organised by Scientific Computing Laboratory

Edib Dobaržić
Faculty of Physics, Belgrade University

Generalized Bloch's theorem and implications for Berry curvature


Bloch's theorem enables reduction of the eigenvalue problem of the single-particle Hamiltonian (overlap matrix, dynamical matrix, etc.), commuting with translational group, to a unit cell of a crystal. Besides this restriction, only to translations, it can be generalized to any symmetry group (being symmetry of a crystal) with a little help of group theory. This generalization provides a simple condition on Hamiltonian gauge in which Berry curvature, as an intrinsic magnetic field, maintains the symmetry of a crystal.