Electron Theory of Metals - Answers to Unsolved Problems/Questions

Why are there simple metals with positive thermopower? Why are there metals with a negative temperature coefficient of resistivity? What is the reason for the Mooij correlation and the Giant Hall effect? These are questions that have not yet been answered with the known transport theories (Mizutani, 2001, pp. 474). However, they can be answered by considering the phenomenon of phase separation connected with an electron transfer between the phases. In this paper answers are proposed to these questions mentioned. Answers to other fundamental problems/questions are proposed in the recently published book (Sonntag, 2023).