Lifshitz impurity phase transition in bismuth
Boiko M. P., Red'ko N. A., Rodionov N. A., Pol'shin V. I.
A heavy electron band at the Γ point has been detected in bismuth on the basis of anomalies in the temperature and concentration dependence of the thermoelectromotive force and the resistivity near the Lifshitz phase transition. The energy gap is found to be Ε T ss 190 meV.