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URN: urn:nbn:de:swb:90-420998

Superconductivity and electronic structure of KFe2As2, RbFe2As2, and CsFe2As2 probed by thermal expansion and magnetostriction at very low temperatures

Eilers, Felix

Abstract:
This thesis compares the iron-based superconductors KFe2As2, RbFe2As2, and CsFe2As2 based on thermal expansion and magnetostriction measurements at temperatures between 50 mK and 4 K and in magnetic fields up to 14 T. The upper critical field is paramagnetically limited for magnetic fields applied parallel to the FeAs layers. Quantum oscillations of the magnetostriction yield extremal cross-sectional areas of the Fermi surface and effective quasiparticle masses, which are enhanced considerably.


Zugehörige Institution(en) am KIT Institut für Festkörperphysik (IFP)
Publikationstyp Hochschulschrift
Jahr 2014
Sprache Englisch
Identifikator KITopen ID: 1000042099
Verlag Karlsruhe
Abschlussart Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Festkörperphysik (IFP)
Prüfungsdaten 04.07.2014
Referent/Betreuer Prof. H. von Löhneysen
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