Topological phenomena in normal metals
S.P. Novikov a
A.Ya. Mal’tsev b
a V.A. Steklov Mathematical Institute, Russian Academy of Sciences, ul. Gubkina 8, Moscow, 119991, Russian Federation
b Landau Institute for Theoretical Physics, Russian Academy of Sciences, ul. Kosygina 2, Moscow, 119334, Russian Federation
Galvanomagnetic phenomena in metals in strong magnetic fields, associated with the Fermi surface geometry are considered. Using three-dimensional topology theorems, a full classification of all possibilities is made. For non-closed general-position electron orbits, special topological characteristics are introduced for the conductivity tensor at B \rightarrow 0.