@Book{1782535063, author="Preising, Martin", title="Toward the nonmetal-to-metal phase transition of helium", year="2021", address="Rostock", abstract="Properties of helium under high pressure are of great importance for a variety of astrophysical objects. This work presents results of extensive ab initio calculations for high-pressure helium regarding the equation of state, the melting line, the electrical conductivity, the reflectivity, and the band gap. The calculations determined a higher-order phase transition from an insulating to a conducting phase which has been discussed for decades. This work finally proposes an update of the phase diagram of helium and discusses its implications on dwarf stars and giant planets.", school="Universit{\"a}t Rostock", note="vorgelegt von Martin Preising", note="Enth{\"a}lt Zeitschriftenartikel", note="GutachterInnen: Ronald Redmer (Universit{\"a}t Rostock) ; Gerd Steinle-Neumann (Bayrisches Geoinstitut)", note="Dissertation Universit{\"a}t Rostock 2021 Kumulative Dissertation", doi="10.18453/rosdok_id00003424", url="http://purl.uni-rostock.de/rosdok/id00003424", url="https://nbn-resolving.org/urn:nbn:de:gbv:28-rosdok_id00003424-3", url="https://d-nb.info/1293536032/34", url="https://doi.org/10.18453/rosdok_id00003424", language="English" }